Good news! There is a better way! Specifically, it’s the addition of a new map stash tab, allowing you to… well… stash your maps. In that tab. You can put maps there. It pretty much does what it says on the tin.
While technical limitations had long made it difficult to have a stash tab for non-stacking items, those limitations have been solved, and players will be able to benefit from a more useful storage method. Check out the video just below to get a more in-depth overview of the new feature. Now you don’t have to cram dozens of maps into your pants! (It is assumed that was your previous storage method.)
Source: Official Site