You install the u-disk manager, upgrade your firmware and it will work normally afterwards where you save and restart and it'll write automatically from sram to physical memory.
U-disk Manager Version V4.6 + G6 loader V4.6A
-Fully support the save function of the "poke" games.
For someone who want to keep the current gamesave data of "poke" games.
1) Run the game and make sure that the gamesave data is still exist.
2) Install the "PC U-disk Manager Version V4.6" and update the "G6 loader V4.6".
3) Copy the game by using the "U-disk Manager Version V4.6" as usual.
4) Use the "Up/Down" button to select the game at the G6 main menu. Press the "select" button and the saver menu will appear. Choose the option of "Sram -> Default" and press the button "A" to confirm.
-The last gamesave data will be stored into the default gamesave file after doing the step 4.
-Please do not load other ds games or program through the above steps and must remember to do the step 4 (IMPORTANCE).
Follow those steps if you want to keep your curren save game.