For the XSEED PC version, copy the savedata folder inside where Ys Seven is installed. These would probably work on the Joyoland port too, but I haven't tested them on it.

The saves files will load these maps:
0005 - mp_9999
0006 - mp_9998
0007 - mp_9997

For the PSP version, copy the PSP folder to your PPSSPP memstick folder. If you would like to use it on real hardware, you will need to re-encrypt the save files with something like Savedata Encyptor Decryptor. The key needed to encrypt the save files is inside \PSP\SAVEPLAIN\ULUS10551. These save files are intended for the US release of the game.

The saves files will load these maps:
ULUS105510016 - mp_9999
ULUS105510017 - mp_9998
ULUS105510018 - mp_9997