Create GPX Tracks on the watch and reuse them - Amazfit

When I went through the threads in the forum I thought it is not possible to use the tracking data on the watch as GPX data without the help of the mobile or other external Apps.
In fact it is quite easy to do this with the watch only thus you can re-use already tracked trails or routes and redo them. The integrated Sport App will show always if you are on track.
Steps to Do within Sport App:
Open Sport App
Got to "Activities" and select a specific trail track and open (with a left swipe) the "Route" and push "Export"
Now your formerly tracked route is stored in gpx format in directory /Internal Storage/gpxdata (on the watch)
Go to "Settings" and select "Sport Trail" and select the trail you want to show in your activity
Now you can start a new activity e.g. "Trail Run" and it will show inline the selected gpx route
Of course if you have gpx routes downloaded from web you can put them directly, e.g. via explorer from PC, to /Internal Storage/gpxdata too.
It looks like below when you are on running track following the GPX route and you never get lost again
bb img
Using firmware 1.3.5 with included Sport App.
PS: I like the Sports App in specfic the GPS tracking on the watch very much. It would be even greater if the Zoom (+/- buttons) good be configured or at least set in smaller steps. Currently it jumps form 50m, 200m, 2km, 5km More intermediate steps would be very helpful e.g. 50m, 100m, 200m, 500m, 1km, 2km, 5km, 10km