Complete fail in understanding how to edit/store/display routes

After 6 months of intense playing with the software I am still completely baffled by routes, tracks, importing same, editing them, displaying them and so on. I will happily pay someone to do a teleconference or screen share session to help me understand how I've messed this up so badly.

Of the *many* problems I've encountered, these are the ones that are severe.

1) I recorded a track of a Jeep trail I was on last fall. Unfortunately I left it recording all the way home, so I had hours worth of unneeded mapping data. So I went in and tried to edit the route with the little slider thing in the Android app. Unfortunately I cut off too much so the entire track is cut off less than halfway through, and I can't figure out how to undo it.

2) After coming home from the above trip, I exported the data as a GPX file. Now I can't figure out how to import that back in to Gaia and save it as a track (even with the hours of useless data). There doesn't seem to be any way for me to edit a GPX that I have been able to find. I tried 9 or 10 different programs and I'm too dumb to use any of them.

The END RESULT I'm trying to achieve is to restore that trail ride (without the ride home afterwards) as a track, save it, and be able to bring it back up as needed the next time I'm in the area.

3) I cannot figure out how to import and store a GPX file, but **NOT** have it always on the screen. I am interested in doing a very complex itinerary but I just want to store it somewhere until I'm ready to undertake the trip. I can't hide it. So when I was out on a ride yesterday I was seeing hundreds of waypoints for that big GPX itinerary all superimposed on the roads I was actually driving. I tried to hide the big GPX itinerary but I deleted it accidentally.

Basically I need to acquire the expertise to use this software and become functional with it before we start out on a massive cross-country overlanding trip in August or September. I'm afraid I'm no further ahead with the software than when I subscribed last summer.

As I said, I would be more than happy to pay an expert user for their time in getting my problems sorted.