Changing media cards

I've been trying to change out the media card (microSD card) on my Torch, but the phone isn't recognizing the pictures on the new card. I transferred everything from the old card to my PC, removed the old card (even using the "safely remove media card" option from the storage settings screen), loaded the new one, and transferred the files back to the new card. When I try to bring up my pictures, the Torch says there are no pictures on the phone. (Yes, it was still set to use the media card to save pictures). Take a new picture and it saves it to device memory, not the media card. (Again, I checked and confirmed that it was set to store on the media card). Take out the new card and replace it with the old one, and everything is back to normal. I've tried a battery pull and restoring a backup file, but to no avail.

Any thoughts?
...and before someone asks if its the card, the "new card" is actually the card that comes with Torch. I was using a 2GB card I had in my 9700 before

thx