diff --git a/internal/querycoordv2/job/job_load.go b/internal/querycoordv2/job/job_load.go
index bdefa088ca796..234ab219e90ea 100644
--- a/internal/querycoordv2/job/job_load.go
+++ b/internal/querycoordv2/job/job_load.go
@@ -102,11 +102,6 @@ func (job *LoadCollectionJob) PreExecute() error {
 		)
 		log.Warn(msg)
 		return merr.WrapErrParameterInvalid(collection.GetReplicaNumber(), req.GetReplicaNumber(), "can't change the replica number for loaded collection")
-	} else if !typeutil.MapEqual(collection.GetFieldIndexID(), req.GetFieldIndexID()) {
-		msg := fmt.Sprintf("collection with different index %v existed, release this collection first before changing its index",
-			collection.GetFieldIndexID())
-		log.Warn(msg)
-		return merr.WrapErrParameterInvalid(collection.GetFieldIndexID(), req.GetFieldIndexID(), "can't change the index for loaded collection")
 	}
 
 	return nil
@@ -291,11 +286,6 @@ func (job *LoadPartitionJob) PreExecute() error {
 		msg := "collection with different replica number existed, release this collection first before changing its replica number"
 		log.Warn(msg)
 		return merr.WrapErrParameterInvalid(collection.GetReplicaNumber(), req.GetReplicaNumber(), "can't change the replica number for loaded partitions")
-	} else if !typeutil.MapEqual(collection.GetFieldIndexID(), req.GetFieldIndexID()) {
-		msg := fmt.Sprintf("collection with different index %v existed, release this collection first before changing its index",
-			job.meta.GetFieldIndex(req.GetCollectionID()))
-		log.Warn(msg)
-		return merr.WrapErrParameterInvalid(collection.GetFieldIndexID(), req.GetFieldIndexID(), "can't change the index for loaded partitions")
 	}
 
 	return nil
diff --git a/internal/querycoordv2/job/job_test.go b/internal/querycoordv2/job/job_test.go
index e31e1e062f00e..ad07022f6fb5e 100644
--- a/internal/querycoordv2/job/job_test.go
+++ b/internal/querycoordv2/job/job_test.go
@@ -418,70 +418,6 @@ func (suite *JobSuite) TestLoadCollectionWithReplicas() {
 	}
 }
 
-func (suite *JobSuite) TestLoadCollectionWithDiffIndex() {
-	ctx := context.Background()
-
-	// Test load collection
-	for _, collection := range suite.collections {
-		if suite.loadTypes[collection] != querypb.LoadType_LoadCollection {
-			continue
-		}
-		// Load with 1 replica
-		req := &querypb.LoadCollectionRequest{
-			CollectionID: collection,
-			FieldIndexID: map[int64]int64{
-				defaultVecFieldID: defaultIndexID,
-			},
-		}
-		job := NewLoadCollectionJob(
-			ctx,
-			req,
-			suite.dist,
-			suite.meta,
-			suite.broker,
-			suite.cluster,
-			suite.targetMgr,
-			suite.targetObserver,
-			suite.collectionObserver,
-			suite.nodeMgr,
-		)
-		suite.scheduler.Add(job)
-		err := job.Wait()
-		suite.NoError(err)
-		suite.EqualValues(1, suite.meta.GetReplicaNumber(collection))
-		suite.targetMgr.UpdateCollectionCurrentTarget(collection)
-		suite.assertCollectionLoaded(collection)
-	}
-
-	// Test load with different index
-	for _, collection := range suite.collections {
-		if suite.loadTypes[collection] != querypb.LoadType_LoadCollection {
-			continue
-		}
-		req := &querypb.LoadCollectionRequest{
-			CollectionID: collection,
-			FieldIndexID: map[int64]int64{
-				defaultVecFieldID: -defaultIndexID,
-			},
-		}
-		job := NewLoadCollectionJob(
-			ctx,
-			req,
-			suite.dist,
-			suite.meta,
-			suite.broker,
-			suite.cluster,
-			suite.targetMgr,
-			suite.targetObserver,
-			suite.collectionObserver,
-			suite.nodeMgr,
-		)
-		suite.scheduler.Add(job)
-		err := job.Wait()
-		suite.ErrorIs(err, merr.ErrParameterInvalid)
-	}
-}
-
 func (suite *JobSuite) TestLoadPartition() {
 	ctx := context.Background()
 
@@ -834,73 +770,6 @@ func (suite *JobSuite) TestLoadPartitionWithReplicas() {
 	}
 }
 
-func (suite *JobSuite) TestLoadPartitionWithDiffIndex() {
-	ctx := context.Background()
-
-	// Test load partition
-	for _, collection := range suite.collections {
-		if suite.loadTypes[collection] != querypb.LoadType_LoadPartition {
-			continue
-		}
-		// Load with 1 replica
-		req := &querypb.LoadPartitionsRequest{
-			CollectionID: collection,
-			PartitionIDs: suite.partitions[collection],
-			FieldIndexID: map[int64]int64{
-				defaultVecFieldID: defaultIndexID,
-			},
-		}
-		job := NewLoadPartitionJob(
-			ctx,
-			req,
-			suite.dist,
-			suite.meta,
-			suite.broker,
-			suite.cluster,
-			suite.targetMgr,
-			suite.targetObserver,
-			suite.collectionObserver,
-			suite.nodeMgr,
-		)
-		suite.scheduler.Add(job)
-		err := job.Wait()
-		suite.NoError(err)
-		suite.EqualValues(1, suite.meta.GetReplicaNumber(collection))
-		suite.targetMgr.UpdateCollectionCurrentTarget(collection)
-		suite.assertCollectionLoaded(collection)
-	}
-
-	// Test load partition with different index
-	for _, collection := range suite.collections {
-		if suite.loadTypes[collection] != querypb.LoadType_LoadPartition {
-			continue
-		}
-		// Load with 1 replica
-		req := &querypb.LoadPartitionsRequest{
-			CollectionID: collection,
-			PartitionIDs: suite.partitions[collection],
-			FieldIndexID: map[int64]int64{
-				defaultVecFieldID: -defaultIndexID,
-			},
-		}
-		job := NewLoadPartitionJob(
-			ctx,
-			req,
-			suite.dist,
-			suite.meta,
-			suite.broker,
-			suite.cluster,
-			suite.targetMgr,
-			suite.targetObserver,
-			suite.collectionObserver,
-			suite.nodeMgr,
-		)
-		suite.scheduler.Add(job)
-		err := job.Wait()
-		suite.ErrorIs(err, merr.ErrParameterInvalid)
-	}
-}
-
 func (suite *JobSuite) TestReleaseCollection() {
 	ctx := context.Background()