Convert save files to yabasanshiro

Hey everyone. I have "bug!" rom with saves on it (see image)
How can i transfer this saves to another device that uses yabasanshiro on android? The current saves I have are on the .bkr format.
I have downloaded the SaturnSaveConverter and was already able to get new files but I don't know what to do with them now. The generated folder with the name Yabasanshiro has this folders inside
and inside of them are .bin files.
Can you help me figure this out?
Thanks a lot and good games! :D