short answer: move your saves from your wine prefix to '~/.local/share/Pokemon Reborn' where ~ is $HOME or your home directory
the location of the saves in the wine prefix is something like '~/.wine/drive_c/users/yourname/Saved Games/Pokemon Reborn' assuming your wine prefix is '~/.wine/' (default)
for the admins / devs
- I didn't find this in the latest readme and had to use "find ~ -name *.rxdata" to find it after creating a dummy save -- it would be helpful if this were documented somewhere obvious
- Excellent work, this runs very smoothly and battles are much less laggy than 18.2