It would appear that you're talking about the same thing. There are five treasure maps (one for each mission) sending you around to various locations in Adventureland where you activate a "hidden symbol" with your Magic Band, watch a practical effect and listen to a narration that tells you the next location. At the end, you can go back to the hut where you start the mission and receive a trading card with the "treasure" for that mission (which is a picture of one of the artifacts or relics from POTC). If that sounds like what you did, I'd say it's the same. I'm not aware of any other treasure map activity (setting aside Sorcerers, which also uses similar maps but there's no "treasure").