I tried that a few hours ago. It works beautifully. However, if I try to import the files from the old temp folder (the real aMule temp folder), guess what happens? It crashes.
Now, I just figured there could be a quick and dirty solution that helps me "fix" the issue from my end, even though I'm still trying to understand what the hell is going on. I just thought I can rename all my files to 200+ using massive renamers and paste them at the folder. The issue would then be "solved", as in, I would have the files imported like I wanted to

. About the crashes, the issue would remain unfixed, but there being now a known workaround.
Funnily, opening the .met files in Notepad I noticed there's actually information about the .part filename in them. Now, I'm not entirely sure if just renaming them still works, and I'm afraid I might crash my downloads if I go about doing that. Can I actually do it safely?
I also tried importing files from both the current run of aMule and my old Dreamule installation in another computer, running WinXP, using the same installation binary. Also crashed. I tried the SVN compile. Crashed. When trying the MinGW compile, same problem: it wouldn't even start.
I don't understand.