I've found it useful to have the opportunity to upload .GPX files to Arc GIS Online. The pop-up feature has also been useful, and I've been able to edit this after saving. But I am having a problem with something else...
Initially, the "change symbols" feature works just like the pop-ups (which I can change later), but the ability to change colors and the appearance of the lines DISAPPEARS after saving the map. Is there any way to do this after saving? Am I missing something? Is there a plan for this in a new version? Thanks for all the work on this great application.
-PS