Add Ability to Select Specific Maps and/or Tracks from Your Data for Display on a Given Map

Feature: It would be great if we could select specific maps and/or tracks from Your Data section to display on another map.

Reasoning: Having Your Data default to all of everything we store in maps is overkill and messy. The display becomes unwieldly and makes routing for a current hike (in my case) very difficult. Being able to select and limit the displayed items would positively impact both for performance (no need to load ALL the things all the time) and ease of use. 

Use case: I'm working on a 2026 Colorado Trail thru-hike and planning for (the low probability for me of the potential for) a yo-yo, which means to keep things clean I'd like to make two planning maps, one for SOBO one for NOBO. Also, if I don't complete it this year, there's next year's attempt to plan. And other great trails to consider. And, and, and. 0)

Right now, I have to either:

(a) create a master map for the trail and export that, import it into any working maps, and do the routing against that, and do that export/import every time I make a change to the master map. And if I go with this option, there's no way to not see all the other Your Data stuff that is not relevant to the current effort.

(b) keep both directions and/or all attempts for a given trail in the same map with the "master" data and just organize them into different folders. Possible, but not my desired workflow as I have other uses for sharing my master maps alone without any attempt routing or tracking data.