I was looking online for a game save for my Batman AA GOTY version of the game. I found out that you can change the folder ID and you can use Batman Arkham Asylum saves with the Game of the Year Edition. I finally figured out and got the game saves to work. I used a program called usbxtafgui to change the title ID. I use Horizon for injecting files, searching for title IDs and changing the name of the save. I loaded the Batman Arkham Asylum game save into my flash drive using Horizon before I used usbxtafgui. Load it into Horizon first then change the title ID.
1. Open usbxtafgui
2. Click on Root
3. Open up your profile by clicking on the long number that is assigned to your profile(this opens up all the title IDs on your flash drive)
4. Open Horizon and do a title search for Batman AA and the GOTY version
5. Look for Batman AA title ID and rename it to GOTY title ID.
6. I personally changed the name of the game save in Horizon to Batman AA GOTY(It is shown like this on my normal game save)
After I did all this I loaded it up and tried it, it worked. My gamertag is my name. If you look you can see I just got the HARD achievement. The final boss for Arkham Asylum is a cakewalk compared to most games. I am going to finish off the Medals soon. If you have a problem, I will load up the one I changed and see if that works for you. If it is easier I can probably change them all and then upload the saves that were already completed so people can use them.
I seen a post before about this from a year ago and people asking how it can be done. I just got lucky. I hope this helps and I am not just re-posting something that was already posted. If so, I apologize.
EDIT: I think I posted this in the wrong thread. I apologize. I thought this forum would be more useful as it pertains to just one game save that I have read about.