Pokemon rom suddenly gone/save game issues (not corruption)

[Atlante]

Hello!

After connecting my smartphone (Sony Xperia ZL) via USB cable in mass storage mode, my Pokemon Black rom simply disappeared. I know it sounds absurd, but I'm sure I didn't delete the file by accident. Has somebody ever experienced something similar? I'm totally willing to admit I simply did something dumb and lost the file, though.

However, the save files are still in the savegame directory. Can I use these files with another Pokemon Black rom, obtained from somewhere else? How should I proceed? I can't seem to remember where I got the rom that generated the save files.

Any help would be appreciated. Thanks and sorry for my eventually wonky englsh.

[Exophase]

Is the ROM on internal storage or an SD card? Does it come back when you unplug USB, and if not does it if you reboot the phone? I think I've heard of issues in Android devices with SD cards getting unmounted when USB mass storage is connected.

[Atlante]

Nope, it was on internal storage, and never came back. I still have the saves, though. Is there a way I can use it with another rom?

[Jay Haru]

Nope, it was on internal storage, and never came back. I still have the saves, though. Is there a way I can use it with another rom?

As long as you use the exact rom (meaning if the old one is a us rom, you also need a us rom) and rename it as the old one, I guess its ok. Unless the said rom was a modified one I don't think it'll have issues