From otrapia (on Curseforge):

on reload, everything appears to reset to the default

Confirmed issue. Items that were stored before new game version update remain, however newly added items are lost, as well as all counts.

Status: under investigation

Ugh, it's a mess. This used to work. Now profiles are fubar, and we have reset of data on reload. This will take me a while, due to busy schedule -- I'll do my best to work on it when I can. Suggestions are welcome.

Back in working order, but unfortunately I had to remove the Pattern Sets feature. You'll still be able to track 5 items, but the config profile db will be taken care of by ElvUI instead of by the addon itself. If enough people want the pattern sets back, I'll try to find time to work on it, but can't promise.