I created a new route using a third party app (GPSies.com) because I haven't started my GaiaGPS Pro subscription yet. The route was laid out on an established trail through a local state park.
When the route finished uploading, I noticed that it was changed to use a different trail in the same park.. This increased the distance by about 0.5 miles and takes me through an area I want to avoid.
Why would GaiaGPS change previously planned route? It's not like it scrambled the route off the original trail, it quite accurately used a different, longer route on another trail.
Here is the original route (blue) as I planned it in GPSies.com and exported to gpx..
Here is the route as it appears after it was imported into GaiaGPS