What happens with a game's Trophy support after a Free Weekend?

I've been playing the free weekend for Ghost Recon Wildlands and having a blast. FPS isn't even a preferred genre of mine (I mostly just play FFXIV) but the squad-based gameplay and online co-op element has me thinking about and feeling like I did when I first played the original SOCOM on PS2 over 15 years ago.

Anyway, I happened to notice I not only haven't earned any Trophies, but the game doesn't even appear in my Trophy list. And yet, having looked at the Trophy list, well, I did perform some of the trophy actions.

So let's say I buy it. Will the Trophies I earned suddenly unlock (timestamped)? Or will the actions need to be redone? If it's the latter, it kind of makes me not want to continue to play (before buying) if I'd just have to essentially start over for a some of these. But I've also never done this free weekend thing before, so perhaps it's the former. Or maybe something else?