@mariusorMove is used for migrating actors from one ID to another: FEP-7628. It can be used for migrating objects too, but I don't think it's practical.
FEP-ef61 solves the problem by making identifiers portable.
Re: I just realized that the default specifications for ActivityPub/ActivityStreams do not have a way to perform an update on an object's ID.
@silverpill@mitra.social@mariusor@metalhead.club here's a dumb question... What happens when my software with no idea of the concept of nomadic identity, encounters an object with an ap:// protocol?