How to copy or retrieve saved forms

If you used ODK Aggregate or Central you could use Briefcase to force pushing filled forms to another server.

In your case I think there is just one solution:

  1. Connect your device to a computer via USB
  2. Go to sdcard/odk/metadata and make a copy of this dir (just in case)
  3. Copy instances.db from sdcard/odk/metadata to your computer
  4. Download a tool for browsing sqlite databases like https://sqlitebrowser.org/dl/
  5. Open the file you copied in step 4 (instances.db)
  6. Select Brows Data tab and instances table, you should see something like:
  7. There is a column called submissionUri you can edit each row which contains wrong submission url manually one by one (be careful).
  8. Once you are done you can save your changes and copy this file back to sdcard/odk/metadata
  9. If there is something wrong you have your copy which I asked you to make in step 2.