#Hollo finally lets you move your old account to new one! (FEP-7628 compliant.) It's bidirectional, which is basically equivalent to and interoperable with Mastodon's account move:

• You can prepare to move your old account to Hollo by adding aliases (setting alsoKnownAs).
• You can start to move your Hollo account to new one by setting movedTo property and sending Move activities to the followers.

It enables your new account to have the same existing followers after you've moved your account.