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

[NintendoManiac64]

Wii64 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 Wii64, it'll straight-up overwrite it with an empty 128KB .mpk file.

[emukidid]

The way it works is that it'll format 4 memory paks into the one .mpk file.
One for each slot. That's why you can't load a 32KB file, it'll realise it's not the full size and it'll overwrite it.

Are you suggesting to change it to be one per controller slot?

[NintendoManiac64]

Apologies for never updating this, but Extrems informed me of that very thing back in March over on the GC-Forever forums.

My reply was as follows which applies here as well:

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?