I updated Rematch on Weds and iirc… everything was fine.
I log in today, and my entire queue is gone. The teams I’ve made are all still there, so it didn’t wipe everything out.
But was removing the entire queue SUPPOSED to happen? Is there any way to get it back? Or do I have to remake it?
Maybe some sort of bug, is there a newer version since Weds?
Thanks! 
Your queue should not have disappeared.
There was a potential edge case that could cause it to empty while logging in that I was going to fix this weekend but it seems like it’s more potential than I thought, sorry about that.
The recent problems with the queue disappearing was that Blizzard has made it so while you’re zoning all pets are flagged as unable to battle. Which, while technically true (they can’t battle while zoning), it’s akin to being in a dark room and the eye color on your driver’s license changing to none.
I had wondered what would happen if it started processing pet events while you were logging in; but since reports of this had stopped I assume it was waiting long enough to start doing pet events. I’ll get a fix up tomorrow if not tonight.
It won’t bring your queue back, however, sorry. 
If you haven’t seen it yet there’s menu options to add filtered pets to the queue so you can pick rare pets less than level 25 and such and bulk add them.
Thank you for the quick response!
And I’m aware of the filters, etc to find/sort pets to help making the new queue.
Thanks again!
sometimes they keep backup files of your addon settings files. If your last backup is usable, you can rename rematch.lua something else and rename rematch.lua.bak to rematch.lua and see if it restores your old queue. It can be found in WTF/account/<account_name>/SavedVariables