diff --git a/packages/core/api/sync/collector.js b/packages/core/api/sync/collector.js
index da6c9519c..cccef4cbc 100644
--- a/packages/core/api/sync/collector.js
+++ b/packages/core/api/sync/collector.js
@@ -37,13 +37,10 @@ class Collector {
   _collect(array) {
     return Promise.all(
       tfun
-        .filter(
-          (item) => item.dateEdited > this._lastSyncedTimestamp || item.migrated
-        )
+        .filter((item) => item.dateEdited > this._lastSyncedTimestamp)
         .map(async (item) => {
           // in case of resolved delta, we do not want to send this key to the server
           if (item.resolved) delete item.resolved;
-          if (item.migrated) delete item.migrated;
 
           return {
             id: item.id,
diff --git a/packages/core/migrations.js b/packages/core/migrations.js
index 9b5b9b2d8..ca147d32f 100644
--- a/packages/core/migrations.js
+++ b/packages/core/migrations.js
@@ -12,13 +12,11 @@ export const migrations = {
       }
       delete item.notebook;
       item.remote = true;
-      item.migrated = true;
       return item;
     },
     delta: function (item) {
       item.data = item.data.ops;
       item.type = "delta";
-      item.migrated = true;
       return item;
     },
     trash: function (item) {
@@ -28,7 +26,6 @@ export const migrations = {
         item.contentId = item.content.delta;
         delete item.content;
       }
-      item.migrated = true;
       return item;
     },
   },
@@ -39,7 +36,6 @@ export const migrations = {
       delete item.notebook;
       item.remote = true;
       if (notebook) item.notebooks = [notebook];
-      item.migrated = true;
       return item;
     },
   },