Cannot Backup Suikoden Tierkreis saves

Hello

I'm getting back to using my Acekard2i. Its been a while. Ages ago, I was backed up all my NDS saves, I believe using the 3in1 Tool with wifi.
I was able to backup every one of my game saves successfully except for Suikoden Tierkreis. I'm just wondering if anyone successfully backed up the save data for this game and what they used.

Thanks