I recently purchased a Pokemon LeafGreen GBA game from eBay. I received the game, and played it until(thank goodness) I was about to board the SS Anne. I decided to take a break, so I started Pearl and aimlessly started to walk around to try to hatch some eggs. I saved and turned off my DS, and started LeafGreen again. Usually, after I pressed start where it said "Press Start", a message box would appear that said "The save file is ok." This time, however, a new box appeared. It said "the save file has been deleted..." and it immediately proceeded to the introduction with Oak. Here is a physical description of the cartridge:
-A semi-transparent green color(like Emerald but more "leafy")
-On the back, "Nintendo", "Model No. AGB-004", "Pat. Pending", "Made In Japan"
On the sticker:
-Pokemon LeafGreen Version in the middle
-"E" for everyone, and Pokemon Company over Nintendo in bottom right corner
-Nintendo seal of quality in bottom right corner
-Under that "AGB-BPGE-USA"
What's the deal?