You might wait a while for a reply, the @admin I think isn't always online as much as we'd like. But you may be asked to make a Googledrive Doc to send to him since you're having the same issue I have. I'm currently trying this method to make a Googledoc. Once the doc is ready I'll be sending @admin it and see if he can import my old sets manually from his end.
If I hear back before you, I'll let you know what happens.