I have several questions...
First, but maybe it's me that have not well understand that. By exemple i have selected two units in the same location (select stack option), and have given an order of assault, the UDP give me the ETA for the destination, and if i open the waypoint editor the ETA is also the same that displayed in the UPD windows. But in the next turn, if i open the waypoint editor the ETA is not the same, that the ETA displayed on the UDP windows...so why ?
(same if no event arrived has my units during the preceding turn.)
BTW, the selected units arrives always at the ETA displayed in the UDP.
Second when i order several units to rest & refit, sometimes the UDP show after several turns ( i play with 15mn by turn) that my unit has always "a no ammo status", and if i select the info key, to choose the ammo status the icon of my unit on the chart shows that in fact my unit remakes the full one with ammunition.
here is a screen:


