Use this app to transfer your Google Drive files / documents from one account to another or to make a copy of a Drive folder.…Use this app to transfer your Google Drive files / documents from one account to another or to make a copy of a Drive folder.
Google only allows transfer of ownership for people on the same Google Apps domain. This app create a copy of all the selected documents from your old account to your new Google account, recreate all the folders and organize them as they should.
Note: For now on, sharing settings aren't migrated.