When flying on a desired route, it sometimes happens that the route is blocked due to weather.

Often one has created another route to the same airport.
E.g. in the mountains over another pass.

How to change to the other route in flight?
What is the best method please ?
I didn't find any instruction and didn't want to try it out in flight.

To modify the route with the rubberband mode wasn't an option.
I intended to fly from LOAZ (Zell am See) via Hochtor Pass to LOWK (Klagenfurt)
The pass I then found blocked by clouds, so I used the route via Radstädter Tauerpass which was open.
Since I wasn't sure what would happen during flight, I left SkyDemon alone and flew the route by memory.