diff --git a/opencti-platform/opencti-front/src/schema/relay.schema.graphql b/opencti-platform/opencti-front/src/schema/relay.schema.graphql
index efeb38bd88eea..49787dc762a7b 100644
--- a/opencti-platform/opencti-front/src/schema/relay.schema.graphql
+++ b/opencti-platform/opencti-front/src/schema/relay.schema.graphql
@@ -7524,7 +7524,7 @@ type ExternalReferenceEditMutations {
   relationAdd(input: StixRefRelationshipAddInput!): StixRefRelationship
   relationDelete(fromId: StixRef!, relationship_type: String!): ExternalReference
   askEnrichment(connectorId: ID!): Work
-  importPush(file: Upload!, version: String, noTriggerImport: Boolean): File
+  importPush(file: Upload!, version: DateTime, noTriggerImport: Boolean): File
 }
 
 type KillChainPhaseEditMutations {
@@ -7544,7 +7544,7 @@ type StixCoreObjectEditMutations {
   restrictionOrganizationAdd(organizationId: ID!): StixCoreObject
   restrictionOrganizationDelete(organizationId: ID!): StixCoreObject
   askEnrichment(connectorId: ID!): Work
-  importPush(file: Upload!, version: String, noTriggerImport: Boolean): File
+  importPush(file: Upload!, version: DateTime, noTriggerImport: Boolean): File
   exportAsk(format: String!, exportType: String!, maxMarkingDefinition: String, contentMaxMarkings: [String], fileMaxMarkings: [String]): [File!]
   exportPush(file: Upload!): Boolean
 }
@@ -7565,7 +7565,7 @@ type StixDomainObjectEditMutations {
   relationAdd(input: StixRefRelationshipAddInput!): StixRefRelationship
   relationsAdd(input: StixRefRelationshipsAddInput!): StixDomainObject
   relationDelete(toId: StixRef!, relationship_type: String): StixDomainObject
-  importPush(file: Upload!, version: String, noTriggerImport: Boolean): File
+  importPush(file: Upload!, version: DateTime, noTriggerImport: Boolean): File
   exportAsk(format: String!, exportType: String!, contentMaxMarkings: [String], fileMaxMarkings: [String]): [File!]
   exportPush(file: Upload!, file_max_markings: [String]!): Boolean
   stixDomainObjectFileEdit(input: StixDomainObjectFileEditInput): StixDomainObject
@@ -7798,7 +7798,7 @@ type StixCyberObservableEditMutations {
   relationsAdd(input: StixRefRelationshipsAddInput!): StixCyberObservable
   relationDelete(toId: StixRef!, relationship_type: String!): StixCyberObservable
   promote: StixCyberObservable
-  importPush(file: Upload!, version: String, noTriggerImport: Boolean): File
+  importPush(file: Upload!, version: DateTime, noTriggerImport: Boolean): File
   exportAsk(format: String!, exportType: String!, maxMarkingDefinition: String): [File!]
   exportPush(file: Upload!): Boolean
 }
diff --git a/opencti-platform/opencti-graphql/config/schema/opencti.graphql b/opencti-platform/opencti-graphql/config/schema/opencti.graphql
index 935f647f93bf5..a10452cbf53bf 100644
--- a/opencti-platform/opencti-graphql/config/schema/opencti.graphql
+++ b/opencti-platform/opencti-graphql/config/schema/opencti.graphql
@@ -12016,7 +12016,7 @@ type ExternalReferenceEditMutations {
   relationAdd(input: StixRefRelationshipAddInput!): StixRefRelationship @auth(for: [KNOWLEDGE_KNUPDATE])
   relationDelete(fromId: StixRef!, relationship_type: String!): ExternalReference @auth(for: [KNOWLEDGE_KNUPDATE])
   askEnrichment(connectorId: ID!): Work @auth(for: [KNOWLEDGE_KNENRICHMENT])
-  importPush(file: Upload!, version: String, noTriggerImport: Boolean): File @auth(for: [KNOWLEDGE_KNUPLOAD])
+  importPush(file: Upload!, version: DateTime, noTriggerImport: Boolean): File @auth(for: [KNOWLEDGE_KNUPLOAD])
 }
 type KillChainPhaseEditMutations {
   delete: ID
@@ -12037,7 +12037,7 @@ type StixCoreObjectEditMutations {
   restrictionOrganizationAdd(organizationId: ID!): StixCoreObject @auth(for: [KNOWLEDGE_KNUPDATE_KNORGARESTRICT])
   restrictionOrganizationDelete(organizationId: ID!): StixCoreObject @auth(for: [KNOWLEDGE_KNUPDATE_KNORGARESTRICT])
   askEnrichment(connectorId: ID!): Work @auth(for: [KNOWLEDGE_KNENRICHMENT])
-  importPush(file: Upload!, version: String, noTriggerImport: Boolean): File @auth(for: [KNOWLEDGE_KNUPLOAD])
+  importPush(file: Upload!, version: DateTime, noTriggerImport: Boolean): File @auth(for: [KNOWLEDGE_KNUPLOAD])
   exportAsk(format: String!, exportType: String!, maxMarkingDefinition: String, contentMaxMarkings: [String], fileMaxMarkings: [String]): [File!]
   @auth(for: [KNOWLEDGE_KNGETEXPORT_KNASKEXPORT])
   exportPush(file: Upload!): Boolean @auth(for: [CONNECTORAPI])
@@ -12062,7 +12062,7 @@ type StixDomainObjectEditMutations {
   relationAdd(input: StixRefRelationshipAddInput!): StixRefRelationship @auth(for: [KNOWLEDGE_KNUPDATE])
   relationsAdd(input: StixRefRelationshipsAddInput!): StixDomainObject @auth(for: [KNOWLEDGE_KNUPDATE])
   relationDelete(toId: StixRef!, relationship_type: String): StixDomainObject @auth(for: [KNOWLEDGE_KNUPDATE])
-  importPush(file: Upload!, version: String, noTriggerImport: Boolean): File @auth(for: [KNOWLEDGE_KNUPLOAD])
+  importPush(file: Upload!, version: DateTime, noTriggerImport: Boolean): File @auth(for: [KNOWLEDGE_KNUPLOAD])
   exportAsk(format: String!, exportType: String!, contentMaxMarkings: [String], fileMaxMarkings: [String]): [File!]
   @auth(for: [KNOWLEDGE_KNGETEXPORT_KNASKEXPORT])
   exportPush(file: Upload!, file_max_markings: [String]!): Boolean @auth(for: [CONNECTORAPI])
@@ -12292,7 +12292,7 @@ type StixCyberObservableEditMutations {
   relationsAdd(input: StixRefRelationshipsAddInput!): StixCyberObservable @auth(for: [KNOWLEDGE_KNUPDATE])
   relationDelete(toId: StixRef!, relationship_type: String!): StixCyberObservable @auth(for: [KNOWLEDGE_KNUPDATE])
   promote: StixCyberObservable @auth(for: [KNOWLEDGE_KNUPDATE])
-  importPush(file: Upload!, version: String, noTriggerImport: Boolean): File @auth(for: [KNOWLEDGE_KNUPLOAD])
+  importPush(file: Upload!, version: DateTime, noTriggerImport: Boolean): File @auth(for: [KNOWLEDGE_KNUPLOAD])
   exportAsk(format: String!, exportType: String!, maxMarkingDefinition: String): [File!]
   @auth(for: [KNOWLEDGE_KNGETEXPORT_KNASKEXPORT])
   exportPush(file: Upload!): Boolean @auth(for: [CONNECTORAPI])
diff --git a/opencti-platform/opencti-graphql/src/database/file-storage.js b/opencti-platform/opencti-graphql/src/database/file-storage.js
index 9d65c2b0239eb..b4d19e605b206 100644
--- a/opencti-platform/opencti-graphql/src/database/file-storage.js
+++ b/opencti-platform/opencti-graphql/src/database/file-storage.js
@@ -7,7 +7,7 @@ import { defaultProvider } from '@aws-sdk/credential-provider-node';
 import { getDefaultRoleAssumerWithWebIdentity } from '@aws-sdk/client-sts';
 import mime from 'mime-types';
 import conf, { booleanConf, ENABLED_FILE_INDEX_MANAGER, logApp } from '../config/conf';
-import { now, sinceNowInMinutes, truncate } from '../utils/format';
+import { now, sinceNowInMinutes, truncate, utcDate } from '../utils/format';
 import { DatabaseError, FunctionalError, UnsupportedError } from '../config/errors';
 import { createWork, deleteWorkForFile, deleteWorkForSource } from '../domain/work';
 import { isNotEmptyField } from './utils';
@@ -328,7 +328,7 @@ export const upload = async (context, user, filePath, fileUpload, opts) => {
   const key = `${filePath}/${truncatedFileName}`;
   const currentFile = await documentFindById(context, user, key);
   if (currentFile) {
-    if (currentFile.metaData?.version === metadata.version) {
+    if (utcDate(currentFile.metaData.version).isSameOrAfter(utcDate(metadata.version))) {
       return { upload: currentFile, untouched: true };
     }
     if (errorOnExisting) {
diff --git a/opencti-platform/opencti-graphql/src/database/middleware.js b/opencti-platform/opencti-graphql/src/database/middleware.js
index c91a40010b411..27dcc91404be3 100644
--- a/opencti-platform/opencti-graphql/src/database/middleware.js
+++ b/opencti-platform/opencti-graphql/src/database/middleware.js
@@ -1359,8 +1359,9 @@ const innerUpdateAttribute = (instance, rawInput) => {
   }
   return input;
 };
-const prepareAttributesForUpdate = (instance, elements, upsert) => {
+const prepareAttributesForUpdate = async (context, user, instance, elements, upsert) => {
   const instanceType = instance.entity_type;
+  const platformStatuses = await getEntitiesListFromCache(context, user, ENTITY_TYPE_STATUS);
   return elements.map((input) => {
     // Dynamic cases, attributes not defined in the schema
     if (input.key.startsWith(RULE_PREFIX) || input.key.startsWith(REL_INDEX_PREFIX)) {
@@ -1371,6 +1372,37 @@ const prepareAttributesForUpdate = (instance, elements, upsert) => {
     if (!def) {
       throw UnsupportedError('Cant prepare attribute for update', { type: instance.entity_type, name: input.key });
     }
+    // Specific case for Label
+    if (input.key === VALUE_FIELD && instanceType === ENTITY_TYPE_LABEL) {
+      return {
+        key: input.key,
+        value: input.value.map((v) => v.toLowerCase())
+      };
+    }
+    // Specific case for name in aliased entities
+    // If name change already inside aliases, name must be kep untouched
+    if (upsert && input.key === NAME_FIELD && isStixObjectAliased(instanceType)) {
+      const aliasField = resolveAliasesField(instanceType).name;
+      const normalizeAliases = instance[aliasField] ? instance[aliasField].map((e) => normalizeName(e)) : [];
+      const name = normalizeName(input.value.at(0));
+      if ((normalizeAliases).includes(name)) {
+        return null;
+      }
+    }
+    // Aliases can't have the same name as entity name and an already existing normalized alias
+    if (input.key === ATTRIBUTE_ALIASES || input.key === ATTRIBUTE_ALIASES_OPENCTI) {
+      const filteredValues = input.value.filter((e) => normalizeName(e) !== normalizeName(instance.name));
+      const uniqAliases = R.uniqBy((e) => normalizeName(e), filteredValues);
+      return { key: input.key, value: uniqAliases };
+    }
+    // For upsert, workflow cant be reset or setup on un-existing workflow
+    if (input.key === X_WORKFLOW_ID && upsert) {
+      const workflowId = R.head(input.value);
+      const workflowStatus = workflowId ? platformStatuses.find((p) => p.id === workflowId) : workflowId;
+      if (isEmptyField(workflowStatus)) { // If workflow is not found, remove the input
+        return null;
+      }
+    }
     // Check integer
     if (def.type === 'numeric') {
       return {
@@ -1409,29 +1441,6 @@ const prepareAttributesForUpdate = (instance, elements, upsert) => {
         };
       }
     }
-    // Specific case for Label
-    if (input.key === VALUE_FIELD && instanceType === ENTITY_TYPE_LABEL) {
-      return {
-        key: input.key,
-        value: input.value.map((v) => v.toLowerCase())
-      };
-    }
-    // Specific case for name in aliased entities
-    // If name change already inside aliases, name must be kep untouched
-    if (upsert && input.key === NAME_FIELD && isStixObjectAliased(instanceType)) {
-      const aliasField = resolveAliasesField(instanceType).name;
-      const normalizeAliases = instance[aliasField] ? instance[aliasField].map((e) => normalizeName(e)) : [];
-      const name = normalizeName(input.value.at(0));
-      if ((normalizeAliases).includes(name)) {
-        return null;
-      }
-    }
-    // Aliases can't have the same name as entity name and an already existing normalized alias
-    if (input.key === ATTRIBUTE_ALIASES || input.key === ATTRIBUTE_ALIASES_OPENCTI) {
-      const filteredValues = input.value.filter((e) => normalizeName(e) !== normalizeName(instance.name));
-      const uniqAliases = R.uniqBy((e) => normalizeName(e), filteredValues);
-      return { key: input.key, value: uniqAliases };
-    }
     // No need to rework the input
     return input;
   }).filter((i) => isNotEmptyField(i));
@@ -1465,7 +1474,7 @@ const updateAttributeRaw = async (context, user, instance, inputs, opts = {}) =>
   const elements = Array.isArray(inputs) ? inputs : [inputs];
   const instanceType = instance.entity_type;
   // Prepare attributes
-  const preparedElements = prepareAttributesForUpdate(instance, elements, upsert);
+  const preparedElements = await prepareAttributesForUpdate(context, user, instance, elements, upsert);
   // region Check date range
   const inputKeys = elements.map((i) => i.key);
   if (inputKeys.includes(START_TIME) || inputKeys.includes(STOP_TIME)) {
@@ -2356,8 +2365,9 @@ const upsertElement = async (context, user, element, type, basePatch, opts = {})
   const updatePatch = { ...basePatch };
   // Handle attributes updates
   if (isNotEmptyField(basePatch.stix_id) || isNotEmptyField(basePatch.x_opencti_stix_ids)) {
+    const compareIds = [element.standard_id, generateStandardId(type, basePatch)];
     const ids = [...(basePatch.x_opencti_stix_ids || [])];
-    if (isNotEmptyField(basePatch.stix_id) && basePatch.stix_id !== element.standard_id) {
+    if (isNotEmptyField(basePatch.stix_id) && !compareIds.includes(basePatch.stix_id)) {
       ids.push(basePatch.stix_id);
     }
     if (ids.length > 0) {
@@ -3081,7 +3091,8 @@ const createEntityRaw = async (context, user, rawInput, type, opts = {}) => {
     const standardId = resolvedInput.standard_id || generateStandardId(type, resolvedInput);
     // Check if the entity exists, must be done with SYSTEM USER to really find it.
     const existingEntities = [];
-    const existingByIdsPromise = internalFindByIds(context, SYSTEM_USER, participantIds, { type });
+    const finderIds = [...participantIds, ...(context.previousStandard ? [context.previousStandard] : [])];
+    const existingByIdsPromise = internalFindByIds(context, SYSTEM_USER, finderIds, { type });
     // Hash are per definition keys.
     // When creating a hash, we can check all hashes to update or merge the result
     // Generating multiple standard ids could be a solution but to complex to implements
@@ -3151,8 +3162,8 @@ const createEntityRaw = async (context, user, rawInput, type, opts = {}) => {
         const concurrentAliases = R.flatten(R.map((c) => [c[key], c.name], concurrentEntities));
         const normedAliases = R.uniq(concurrentAliases.map((c) => normalizeName(c)));
         const filteredAliases = R.filter((i) => !normedAliases.includes(normalizeName(i)), resolvedInput[key] || []);
-        const inputAliases = { ...resolvedInput, [key]: filteredAliases };
-        return upsertElement(context, user, existingByStandard, type, inputAliases, { ...opts, locks: participantIds });
+        const resolvedAliases = { ...resolvedInput, [key]: filteredAliases };
+        return upsertElement(context, user, existingByStandard, type, resolvedAliases, { ...opts, locks: participantIds });
       }
       if (resolvedInput.update === true) {
         // The new one is new reference, merge all found entities
@@ -3165,7 +3176,8 @@ const createEntityRaw = async (context, user, rawInput, type, opts = {}) => {
       }
       if (resolvedInput.stix_id && !existingEntities.map((n) => getInstanceIds(n)).flat().includes(resolvedInput.stix_id)) {
         const target = R.head(filteredEntities);
-        return upsertElement(context, user, target, type, { x_opencti_stix_ids: [...target.x_opencti_stix_ids, resolvedInput.stix_id] }, { ...opts, locks: participantIds });
+        const resolvedStixIds = { ...target, x_opencti_stix_ids: [...target.x_opencti_stix_ids, resolvedInput.stix_id] };
+        return upsertElement(context, user, target, type, resolvedStixIds, { ...opts, locks: participantIds });
       }
       // If not we dont know what to do, just throw an exception.
       throw UnsupportedError('Cant upsert entity. Too many entities resolved', { input, entityIds });
diff --git a/opencti-platform/opencti-graphql/src/domain/connector.js b/opencti-platform/opencti-graphql/src/domain/connector.js
index 1ad0f1bce446f..9f2260b5159dd 100644
--- a/opencti-platform/opencti-graphql/src/domain/connector.js
+++ b/opencti-platform/opencti-graphql/src/domain/connector.js
@@ -151,7 +151,7 @@ export const createSyncHttpUri = (sync, state, testMode) => {
     return `${httpBase(uri)}stream/${stream}`;
   }
   const from = isEmptyField(state) ? '0-0' : state;
-  const recover = sync.recover ?? sync.created_at;
+  const recover = sync.recover ?? now();
   let streamUri = `${httpBase(uri)}stream/${stream}?from=${from}&listen-delete=${del}&no-dependencies=${dep}`;
   if (recover) {
     streamUri += `&recover=${recover}`;
diff --git a/opencti-platform/opencti-graphql/src/domain/stixCoreObject.js b/opencti-platform/opencti-graphql/src/domain/stixCoreObject.js
index 079d1100627d1..a203944a446fd 100644
--- a/opencti-platform/opencti-graphql/src/domain/stixCoreObject.js
+++ b/opencti-platform/opencti-graphql/src/domain/stixCoreObject.js
@@ -385,7 +385,7 @@ export const stixCoreObjectImportPush = async (context, user, id, file, args = {
     const isAutoExternal = !entitySetting ? false : entitySetting.platform_entity_files_ref;
     const filePath = `import/${previous.entity_type}/${internalId}`;
     // 01. Upload the file
-    const meta = { version: fileVersion };
+    const meta = { version: fileVersion?.toISOString() };
     if (isAutoExternal) {
       const key = `${filePath}/${filename}`;
       meta.external_reference_id = generateStandardId(ENTITY_TYPE_EXTERNAL_REFERENCE, { url: `/storage/get/${key}` });
diff --git a/opencti-platform/opencti-graphql/src/generated/graphql.ts b/opencti-platform/opencti-graphql/src/generated/graphql.ts
index 065cc9fc306c5..d5ecb92d3ed55 100644
--- a/opencti-platform/opencti-graphql/src/generated/graphql.ts
+++ b/opencti-platform/opencti-graphql/src/generated/graphql.ts
@@ -6759,7 +6759,7 @@ export type ExternalReferenceEditMutationsFieldPatchArgs = {
 export type ExternalReferenceEditMutationsImportPushArgs = {
   file: Scalars['Upload']['input'];
   noTriggerImport?: InputMaybe<Scalars['Boolean']['input']>;
-  version?: InputMaybe<Scalars['String']['input']>;
+  version?: InputMaybe<Scalars['DateTime']['input']>;
 };
 
 
@@ -21812,7 +21812,7 @@ export type StixCoreObjectEditMutationsExportPushArgs = {
 export type StixCoreObjectEditMutationsImportPushArgs = {
   file: Scalars['Upload']['input'];
   noTriggerImport?: InputMaybe<Scalars['Boolean']['input']>;
-  version?: InputMaybe<Scalars['String']['input']>;
+  version?: InputMaybe<Scalars['DateTime']['input']>;
 };
 
 
@@ -22385,7 +22385,7 @@ export type StixCyberObservableEditMutationsFieldPatchArgs = {
 export type StixCyberObservableEditMutationsImportPushArgs = {
   file: Scalars['Upload']['input'];
   noTriggerImport?: InputMaybe<Scalars['Boolean']['input']>;
-  version?: InputMaybe<Scalars['String']['input']>;
+  version?: InputMaybe<Scalars['DateTime']['input']>;
 };
 
 
@@ -22679,7 +22679,7 @@ export type StixDomainObjectEditMutationsFieldPatchArgs = {
 export type StixDomainObjectEditMutationsImportPushArgs = {
   file: Scalars['Upload']['input'];
   noTriggerImport?: InputMaybe<Scalars['Boolean']['input']>;
-  version?: InputMaybe<Scalars['String']['input']>;
+  version?: InputMaybe<Scalars['DateTime']['input']>;
 };
 
 
diff --git a/opencti-platform/opencti-graphql/src/graphql/graphql.js b/opencti-platform/opencti-graphql/src/graphql/graphql.js
index 657a37f4e714e..9652e2a584653 100644
--- a/opencti-platform/opencti-graphql/src/graphql/graphql.js
+++ b/opencti-platform/opencti-graphql/src/graphql/graphql.js
@@ -78,6 +78,7 @@ const createApolloServer = () => {
       executeContext.req = req;
       executeContext.res = res;
       executeContext.synchronizedUpsert = req.headers['synchronized-upsert'] === 'true';
+      executeContext.previousStandard = req.headers['previous-standard'];
       executeContext.workId = req.headers['opencti-work-id'];
       try {
         const user = await authenticateUserFromRequest(executeContext, req, res);
diff --git a/opencti-platform/opencti-graphql/src/manager/syncManager.js b/opencti-platform/opencti-graphql/src/manager/syncManager.js
index 9ffb5b066ad4e..ca33928aab081 100644
--- a/opencti-platform/opencti-graphql/src/manager/syncManager.js
+++ b/opencti-platform/opencti-graphql/src/manager/syncManager.js
@@ -1,7 +1,5 @@
-import * as R from 'ramda';
 import EventSource from 'eventsource';
 import { clearIntervalAsync, setIntervalAsync } from 'set-interval-async/fixed';
-import * as jsonpatch from 'fast-json-patch';
 import conf, { booleanConf, getPlatformHttpProxyAgent, logApp } from '../config/conf';
 import { executionContext, SYSTEM_USER } from '../utils/access';
 import { TYPE_LOCK_ERROR } from '../config/errors';
@@ -80,13 +78,9 @@ const syncManagerInstance = (syncId) => {
   };
   const transformDataWithReverseIdAndFilesData = async (sync, httpClient, data, context) => {
     const { uri } = sync;
-    let processingData = data;
+    const processingData = { ...data };
     // Reverse patch the id if modified
-    const idOperations = (context?.reverse_patch ?? []).filter((patch) => patch.path === '/id');
-    if (idOperations.length > 0) {
-      const { newDocument: stixPreviousID } = jsonpatch.applyPatch(R.clone(data), idOperations);
-      processingData = stixPreviousID;
-    }
+    const idOperation = (context?.reverse_patch ?? []).find((patch) => patch.path === '/id');
     // Handle file enrichment
     const entityFiles = processingData.extensions[STIX_EXT_OCTI].files ?? [];
     for (let index = 0; index < entityFiles.length; index += 1) {
@@ -95,7 +89,7 @@ const syncManagerInstance = (syncId) => {
       const response = await httpClient.get(`${httpBase(uri)}${fileUri.substring(fileUri.indexOf('storage/get'))}`);
       entityFile.data = Buffer.from(response.data, 'utf-8').toString('base64');
     }
-    return processingData;
+    return { data: processingData, previous_standard: idOperation?.value };
   };
   const saveCurrentState = async (context, type, sync, eventId) => {
     const currentTime = new Date().getTime();
@@ -139,11 +133,17 @@ const syncManagerInstance = (syncId) => {
             if (eventType === 'heartbeat') {
               await saveCurrentState(context, eventType, sync, eventId);
             } else {
-              const syncData = await transformDataWithReverseIdAndFilesData(sync, httpClient, data, eventContext);
+              const { data: syncData, previous_standard } = await transformDataWithReverseIdAndFilesData(sync, httpClient, data, eventContext);
               const enrichedEvent = JSON.stringify({ id: eventId, type: eventType, data: syncData, context: eventContext });
               const content = Buffer.from(enrichedEvent, 'utf-8').toString('base64');
               // Applicant_id should be a userId coming from synchronizer
-              await pushToSync({ type: 'event', synchronized, update: true, applicant_id: sync.user_id ?? OPENCTI_SYSTEM_UUID, content });
+              await pushToSync({
+                type: 'event',
+                synchronized,
+                previous_standard,
+                update: true,
+                applicant_id: sync.user_id ?? OPENCTI_SYSTEM_UUID,
+                content });
               await saveCurrentState(context, 'event', sync, eventId);
             }
           } catch (e) {
diff --git a/opencti-worker/src/worker.py b/opencti-worker/src/worker.py
index eb0fdefc72e7c..a16d289b19c20 100644
--- a/opencti-worker/src/worker.py
+++ b/opencti-worker/src/worker.py
@@ -247,6 +247,8 @@ def data_handler(  # pylint: disable=too-many-statements, too-many-locals
         work_id = data["work_id"] if "work_id" in data else None
         synchronized = data["synchronized"] if "synchronized" in data else False
         self.api.set_synchronized_upsert_header(synchronized)
+        previous_standard = data.get("previous_standard")
+        self.api.set_previous_standard_header(previous_standard)
         # Execute the import
         self.processing_count += 1
         content = "Unparseable"