Steam just wiped my 'Not Interested' list, which had 27K games on it...

Yea, so I just found out that Steam wiped my entire list of games I had marked as not interested. There was over 27,000 of them since I've gone through the entire Steam queue (took a loooong time). Has anyone here had this happen before and know if there's a way to get it back? :(

EDIT: I'm going to close this thread for a few hours and see if it comes back on its own.