I kinda forgot about this and moved on, but remembered it just now. Turns out, it wasn't disallowing me from copying from my old hard-drive. Apparently, Lutris, when installing a program had set permissions up in a way where I couldn't copy things over the destination. I was trying to copy my old FL Studio install over from my old HDD to my new M2 drive and ran into that issue. Turns out, it's all good and everything is working fine.
Sorry for the delay in the update. Thanks for the assistance offered in the matter, though! I do appreciate it!