Convert Sram GBA game to Fram save

Seems like gba cart PCB version agb-e11-01 can work as a drop in replacement for any gba game that ran on sram battery saves. To do so I swapped the roms from the two different games. in this case I swapped megaman battle network 1's rom onto the pcb i mentioned and it worked perfectly.
Thats really it! I think nintendo designed this board to work as such to make it easy for devs to take an game currently on sale or in development to easily switch to fram.
Would explain where there are a handful of games that have sram and fram versions.