@menion Now I understand what's the difference between the two.
If you need two of them or not, if you need to export as gpx as @Andrew suggested or not, I don't know. We will probably discuss for months and therefore it's a choice you should made. IMO if you have two different object is better to have them really different (as it is) then more or less same (as unnamed via points).
I did a test with the available beta and a fresh track and seems the shaping points are not recovered in the track when you edit with route planner.

New track. on the right you see a via point in blue e several shaping points here and there.

If you save and edit the route has been recomputed and only the via point has been used.
If you transform the via point in shaping point you have this after editing again:

From you words I understand this is not the intended behaviour.
If I have two put my two cents is that the track is not recomputed when you edit it with route planner
It should behave as it does the moment before saving, I think is the more natural behaviour.
If you want a recalculation, make a fake move on a shaping point or ask to compute it all with a proper menu entry.
(BTW great thing that if you exit without saving you can restart where you left )
As always thousands thumbs up

for your work!
Inviato dal mio SM-G930F utilizzando Tapatalk