About The Quest Redbeard's Booty

I'm a level 65 assassin and I was doing the quest Readbeard's Booty and I was on the last stage of the quest, in which you just have to talk to Marston with the 2 maps. Somehow, I lost the first map and the wiki says I can't complete the quest unless I get another character to do the same quest and transfer the map to me. All my other characters are level 12 and below, so is there any other way I can get the first map back? I tried /fixquests but it didn't work.

 

Can’t you just go back to the island that you got that map on? You can return to that area from the place with the small versions of the islands from any island.