[Not64] Existing standard 32KB .mpk save files get overwritten by empty 128KB .mpk save files

[Nintendo Maniac 64]

Not64 seems to be creating non-standard 128KB .mpk save files, possibly similar to how the old Project64 v1.6's Jabo input plugin created non-standard 256KB .mpk files.

But the big problem is that, if you try to use an existing standard 32KB .mpk save file with Not64, it'll straight-up overwrite it with an empty 128KB .mpk file.

[Extrems]

It's four 32 KiB Controller Paks in one file.

[Nintendo Maniac 64]

Oh, uh... I did not expect that.

Outside of making it use individual 32KB .mpk files per controller, would it be a rude suggestion to at least change the file extension to something like .4mpk or .4mk so as to differentiate it?