Lost progress in some skill cards after Op 4

I mentioned this in another thread but I think it deserves its own. I can’t prove this with screenshots, but I am sure that I’ve lost all but the initial card for multiple skills. In my case most of them seem to be rares. Here’s my list so far:
Kait - Enhanced stim, cloak batteries, (possibly) custom gnasher
Del - Ingenuity
Fahz - Modified embar, explosive critical hit
Baird - Experimental weapons
Cole - Inner fire