diff --git a/src/resolvers/md2md.ts b/src/resolvers/md2md.ts
index ebde286a..368c12f5 100644
--- a/src/resolvers/md2md.ts
+++ b/src/resolvers/md2md.ts
@@ -1,4 +1,4 @@
-import {existsSync, readFileSync, writeFileSync} from 'fs';
+import {readFileSync, writeFileSync} from 'fs';
 import {basename, dirname, extname, join, resolve} from 'path';
 import shell from 'shelljs';
 import log from '@diplodoc/transform/lib/log';
@@ -57,11 +57,7 @@ export async function resolveMd2Md(options: ResolveMd2MdOptions): Promise<void>
                 )}`;
             }
 
-            const changesPath = join(outputDir, `changes-${changesName}.json`);
-
-            if (existsSync(changesPath)) {
-                throw new Error(`Changelog ${changesPath} already exists!`);
-            }
+            const changesPath = join(outputDir, `__changes-${changesName}.json`);
 
             writeFileSync(
                 changesPath,
diff --git a/src/services/tocs.ts b/src/services/tocs.ts
index e7769f94..f66764d5 100644
--- a/src/services/tocs.ts
+++ b/src/services/tocs.ts
@@ -17,11 +17,13 @@ import {IncludersError, applyIncluders} from './includers';
 
 export interface TocServiceData {
     storage: Map<string, YfmToc>;
+    tocs: Map<string, YfmToc>;
     navigationPaths: string[];
     includedTocPaths: Set<string>;
 }
 
 const storage: TocServiceData['storage'] = new Map();
+const tocs: TocServiceData['tocs'] = new Map();
 let navigationPaths: TocServiceData['navigationPaths'] = [];
 const includedTocPaths: TocServiceData['includedTocPaths'] = new Set();
 const tocFileCopyMap = new Map<string, string>();
@@ -76,6 +78,9 @@ async function add(path: string) {
     /* Store parsed toc for .md output format */
     storage.set(path, parsedToc);
 
+    /* save toc in distinct set, storage includes .md files too */
+    tocs.set(path, parsedToc);
+
     /* Store path to toc file to handle relative paths in navigation */
     parsedToc.base = pathToDir;
 
@@ -411,6 +416,10 @@ function getCopyFileMap() {
     return tocFileCopyMap;
 }
 
+function getAllTocs() {
+    return [...tocs.keys()];
+}
+
 export default {
     add,
     getForPath,
@@ -419,4 +428,5 @@ export default {
     getIncludedTocPaths,
     setNavigationPaths,
     getCopyFileMap,
+    getAllTocs,
 };
diff --git a/src/steps/processChangelogs.ts b/src/steps/processChangelogs.ts
index 13eaaf53..dbfcce0d 100644
--- a/src/steps/processChangelogs.ts
+++ b/src/steps/processChangelogs.ts
@@ -1,31 +1,99 @@
 import {glob} from '../utils/glob';
 import {join} from 'node:path';
-import {ArgvService} from '../services';
+import {ArgvService, TocService} from '../services';
 import {readFile, unlink, writeFile} from 'node:fs/promises';
 import {Lang} from '../constants';
 
-type Language = string;
 type MergedChangelogs = {
-    [language: Language]: Record<string, Record<string, unknown>>;
+    [pathToProjectToc: string]: {
+        [language: string]: {
+            [pathToFile: string]: unknown;
+        };
+    };
+};
+
+type ParsedPath = {
+    language: string;
+    path: string;
+    level: number;
+};
+
+const hasSingleLanguage = () => {
+    const {langs} = ArgvService.getConfig();
+    return typeof langs === 'undefined' || langs.length === 1;
+};
+
+const project = (path: string): ParsedPath => {
+    const parts = path.split('/').slice(0, -1);
+    const language = hasSingleLanguage() ? Lang.EN : parts.shift()!;
+    const level = parts.length;
+
+    return {
+        path: '/' + parts.join('/'),
+        language,
+        level,
+    };
+};
+
+const file = (path: string): ParsedPath => {
+    const parts = path.split('/');
+    const language = hasSingleLanguage() ? Lang.EN : parts.shift()!;
+
+    return {
+        path: '/' + parts.join('/'),
+        language,
+        level: -1,
+    };
+};
+
+type Project = {
+    path: string;
+    languages: string[];
+    level: number;
 };
 
 /*
-    {
-        "ru": {
-            "/": {
-                "12314": <changelog>
-            },
-            "/plugins": {
-                "213312": <changelog>
-            }
-        }
-    }
+    This function collects all the project's subprojects and sorts them by depth level. 
+    This is done to make it easier to find which toc.yaml file is responsible 
+    for the necessary changes file: the earlier the project is in the list, the deeper it is. 
+    The first project whose path to toc.yaml shares a common prefix with the path to changes 
+    will be considered responsible for it.
+
 */
+const uniqueProjects = (tocs: string[]): [string, Project][] => {
+    const projects = tocs.map(project);
+    const composed = projects.reduce(
+        (acc, curr) => {
+            if (acc[curr.path]) {
+                acc[curr.path].languages.push(curr.language);
+
+                return acc;
+            }
+
+            acc[curr.path] = {
+                languages: [curr.language],
+                path: curr.path,
+                level: curr.level,
+            };
+
+            return acc;
+        },
+        {} as Record<string, Project>,
+    );
+
+    const entries = Object.entries(composed).sort((a, b) => {
+        return b[1].level - a[1].level;
+    });
+
+    return entries;
+};
 
 export async function processChangelogs() {
-    const {output: outputFolderPath, langs} = ArgvService.getConfig();
+    const {output: outputFolderPath} = ArgvService.getConfig();
+    const tocs = TocService.getAllTocs();
+    const projects = uniqueProjects(tocs);
 
-    const result = await glob('**/**/changes-*', {
+    const result = await glob('**/**/__changes-*.json', {
         cwd: outputFolderPath,
     });
 
@@ -48,25 +116,23 @@ export async function processChangelogs() {
     );
 
     changes.forEach(([path, value]) => {
-        if (!langs) {
-            path = `${Lang.EN}/${path}`;
-        }
-
-        const [lang, ...rest] = path.split('/');
-        const [, hash] = rest.pop()!.split(/[-.]/);
+        const {language, path: pathToFile} = file(path);
 
-        const fullPath = '/' + rest.join('/');
+        const project = projects.find(([pathToProject, project]) => {
+            return pathToFile.startsWith(pathToProject) && project.languages.includes(language);
+        });
 
-        if (!merged[lang]) {
-            merged[lang] = {};
+        if (!project) {
+            return;
         }
 
-        if (!merged[lang][fullPath]) {
-            merged[lang][fullPath] = {};
-        }
+        const [projectPath] = project;
+
+        merged[projectPath] ??= {};
+        merged[projectPath][language] ??= {};
 
-        Object.assign(merged[lang][fullPath], {
-            [hash]: value,
+        Object.assign(merged[projectPath][language], {
+            [path]: value,
         });
     });