Social: unable to move account

Hi, I’m setting up my own fediverse instance and I want to move my account there, using the mastodon feature to do so.

The prerequisite is to add my existing account (the one at as an alias to the new one (the destination account). It’s already done (checked by inspecting my alsoKnownAs property).

Even with that set up, I’m getting the error is not back-referencing this account when trying to launch the move action.

Reading from different sources there might be the change of it being a problem with some sort of cache in side. Can you confirm this? How should I proceed?