For the record, GNU Social -> Pleroma migration consists of both a set of Python data conversion scripts, and a set of changes made to Pleroma. I have only made the Python scripts publicly available, but they are NOT READY FOR PRODUCTION! Numerous changes were made when we went live, that have not been pushed to the public repository.

This is in addition to the problems it is causing other Pleroma servers, which the Pleroma devs are working to remediate.

In short NOTHING IS READY FOR RELEASE YET. I'll make a note when that changes.