MS4 Upload issues

So like how can I upload my piece without having it Replace an existing one?

Like (Bc I think Ms's copyright prevention sucks)
I always upload drafts and samples, and I always upload "Progress reports" and shit.

But when I do so, it keeps replacing the "big cheese" score, when I JUST want it to be a separate upload, WHILE containing and keeping the sound fonts I used.

If I try to post it from the website (which I thought would work) it works, but it replaces all my sound fonts with MS Basic again, which I don't want.

I'd hate to think that the solution is to copy everything from the "big cheese" score and make a WHOLE new file.

And the thing is that I always use copies (like I have 7 copies of the same score technically, bc I fear that MS will corrupt my scores like it has in the past) so I used one copy, delete other parts of the score, and then uploaded a single piece from it (rather than the whole set, which I already have uploaded as the "main piece")

Ugh, I know its rather confusing, but I just want to be able to upload my piece without it replacing an existing one.