Hello Jean-Phillipe,
I know there are a lot of TPVS experts here in this group like me, but here we should be talking about TM not TPVS...
Anyway, as far as I know, the planned shipment end of shipment document created by TPVS is filled in standard with the date/hour of end of trip, not considering the unload activity.
Best Regards, Marcelo Lauria