We just released the notes 1827616 (9.0, will be released soon) 1825670(8.0 / 8.1) which enables a nice new feature:
With a new user parameter /SCMTMS/SCH_FORCE (needs to be set to X) the user can activate automatic rescheduling.
If the departure time in the first (or for 9.0 current..) stop is changed, an automatic rescheduling is started and the planned departure time is kept.
So if the user changes the departure time:
After changing the departure to 15.03.2013 the scheduling is automatically performed and all times are adapted. Specifically interesting is that forward scheduling is performed, but the loading at the departure location is still backward scheduled.