The fixed build is here
https://www.emclient.com/dist/v10.4.4171/setup.msi
You have 2 choices here:
- Return to a backed up database and run the new version → migration should work fine this time
- Use your current database and for every corrupted rule you would need to open the rule and select the right account again
Sorry for the inconvenience. Tell me please it it works.