That works! Thank you.

I noticed that after saving a record to the database, a fetchedRecordZoneChanges event will be triggered by CKSyncEngine, returning the modified record that was just saved. Although this seems redundant and inefficient, is the purpose of this to locally persist the newly saved record?

I ran into this problem when updating app from SceneDelegate to App lifecycle. After much trial and error, this setting in info.plist fixed the issue: