Hi,
I try to explain the problem starting from the beginning. I was playing with FireRed on the NDS when I found the possibility to exctract the save battery with GbaBackup Tool and use this for pokemon trade on the emulator ( this was the only possibility that I had since I've got only a NDS and a GBA and it is not possible to connect them for pokemon trade) , then I restored the save with same tool.
After playing FireRed I decided to play Emerald , which was a gift of a friend of