See #17 Above. Quick test using 3.3.814
1. RM Save a Route or selective routes to a gpx file. Works.
2. RM Save all visible routes to a gpx file. Works.
3. RM Import
4. RM Save a Track or selective tracke to a gpx file.
5. RM Save all visible routes to a gpx file.
6. RM Import
3. Create a Temporary Layer. Works.
4. Imports a Route or routes to a Temporary Layer. Appears to work, but does not show when all routes and tracks are turned off.
5. I haven't been able to get this to work the way I think it should. Needs more testing.
WP "selectively export/delete WP from the Route Manager Window" (in Routes)
"Select multiple waypoints for Export and Delete"
1. In Route Properties you can select multiple waypoints and delete them.
2. In Route Properties you can export all as text.
In Tracks this function is a little different still.
I am going to suggest closing all of these items at this point. If you know more about this and don't want it closed, get onto Tracker and change it.