It doesn't matter if it can be retrieved by the API or not from a user's perspective. Merge requests and comments are no longer authored by the correct user, b

It doesn't matter if it can be retrieved by the API or not from a user's perspective. Merge requests and comments are no longer authored by the correct user, because there's no user mapping - everything ends up getting authored by the user who performed the import. Inline review comments on MRs appear to be lost or mangled. Review summary comments on MRs appear to be lost or mangled. Dates on MRs are lost. Dates on comments are lost.