wow fought hard to change an instance I manage from #hometown to #mastodon mainline.
The main task, rolling back hometown-specific database-migrations was sort of easy. What really killed me, was getting webpack to understand that I did not have the hometown-specific theme. I had to hand-edit the theme in the database from the command-line - and the theme name MUST END WITH A NEWLINE ... ha lol
In the screenshot you can see the newline being signified by a '+' sign in the psql table view.