I have tested the scenario, and it works perfectly, I greatly enjoyed hotseating it and it ended roughly as expected. The only doubt I still have is about map scale and supplies. I'm using a scale of 2,5km per hex and 6-hours turns for a regimental-scale base unit and Corps-scale scenario as a whole.
I set up one Supply Point worth 44 points and a couple others worth 20 points for each side. The map is reasonably connected with rails and roads.
For example, one of the Supply Points' Origin with 44 supply value is in hex 39,0. There is an Improved Road that connects hex 39,1 (37 points here) to hex 25,8, but in that hex there is just 12 supply points available. In hex 38,0 there are 37 supply points and there is a railroad connecting to hex 25,7, where arrive only 9 supply points.
What am I doing wrong? It seems roads/rails don't transport supplies at all. Pic below:


