I have one route with waypoints defined in it and I needed to recreate part of route, since road has been moved , so I have start with split and notice that after the split there are no waypoints in new two created files.
I have try to find an option to export waypoints from old route and to import them later when I recreate part of route, but I didn't find that option.
So proposal for application that during the split you can chose into which of two new routes do you want to copy existing waypoints. Or to have an option to export waypoints from route into the point folder, and later import them into the route from that folder. This second option would be useful for some other reasons for me as well

I have found option to export point into the file, but when I have 10 or more waypoints it is lot of work to export one by one and then import them.