Yeah. I'm a bit disorganised (not to say lazy hahah) when it comes to actually saving presets externally in a folder somewhere. I sometimes just save the lmms file and that's it. I have to be more tidy about that stuff...
I do have the files still. And when I open the project everything else works fine. But all the sound design of some synths are gone. I've been avoiding working on those projects but I think the situation is salvageable. It'll be a good exercise in sound design, at least, I guess.