In acc2353126 (#719) we changed transferGuestSession to update last_modifier_id and delete the guest account after all sessions have been transferred. This upgrade step does a similar thing with existing sessions. We don't update the modification date because we don't know when the session was transferred. We also double check that the guest account doesn't have any sessions associated with it so that we can safely delete it.
In acc2353126 (#719) we changed
transferGuestSessionto updatelast_modifier_idand delete the guest account after all sessions have been transferred. This upgrade step does a similar thing with existing sessions. We don't update the modification date because we don't know when the session was transferred. We also double check that the guest account doesn't have any sessions associated with it so that we can safely delete it.Fixes syslabcom/scrum#2155