@joeldebruijn In the end I had no problem moving across followers from Mastodon to Akkoma. (works the same way as Mastodon to Mastodon instance migration and you have to redirect your old account). I did lose thousands of followers but as I’ve written about I believe those to be abandoned accounts. Which means it was probably a good thing :)
Follows works with exporting and importing a csv file.
https://axbom.me/notice/ARb5w5wAjbb9PcCoVM