i can get the saves edited w/ black chocobo back on to the ps3, it just requires a bit of extra hardware and some extra steps. but this is as good as it gets (for now.).
first off you need a few things.
1. a ps3, w/ ff7 on it ... (so u can play when done)
2. a ff7 save of some kind (it don't matter cause black chocobo can import even your psv)
3.
black chocobo v1.1 or higher.
4.
a ps3 Memory card adapter (cost me about 10 dollars on ebay)
5. a ps2 w/ a way of running homebrew code. (i recommend a
FMCB card. since you can then have uLE "installed" on a ps2 memory card.)
6.
ulaunchElf on the ps2 (comes w/ the noob installer of fmcb)
7.usb stick of some kind
8. PSX memory card.
now if u have all of that here is what u do.
1.assuming u want to edit the ps3's save u start by exporting your save from the virtual memory card to the usb stick
2.open the save you copied w/ black chocobo. and edit it , then Export the save as PSX save.
3.put your usb stick, and psx memory card in the ps2.
4.boot the ps2 w/ the FMCB card inserted and the psx memory card. run ulaunchElf.
5.browse to the mass folder (this is usb) and copy the save you just created in step 2.
6.now still in fmcb go to the mc slot w/ the psx card in it and use mcPaste from the menu
7.after it copies u can turn off the ps2 and put the PSX memory card in your memory card adapter for the ps3
8.turn on the ps3 and use the psx/ps2 save data manager to copy the save from the adapter to your virtual card. (this works because it will make a psv out of the save)
9.play FF7 and enjoy your hacked save game
Edit: speaking of psp saves can some one send me one, so i can add that to the list of formats that i can read, also i assume it needs a checksum to be saved (like the ps3) so ne info on that would be helpful.