I found treasure map 4 while on an unrelated quest. I took it and returned to my breezehome to save my game and drop off some things i had accumulated on my trek. As soon as i was inside the little message in the upper left corner of the screen said that treasure map 4 was removed???? I looked and sure enough it was gone. Why is this? Do i have to start with them in order from 1 -11? Any ideas? Thanks in advance?