MegaCD RAM Cartridge emulation not saving properly in PicoDrive on 3DS

I’m running into a problem with the MegaCD RAM cartridge emulation while running PicoDrive on my N3DS. I can get the emulator to read and initialize the RAM cartridge, however it doesn’t actually save any data to the emulated cartridge. Every time I start a Sega CD game, it says that the cartridge needs to be formatted again.

Using the cia version from the 1.3.3 stable release

I need an answer to this too !