P48013, manufacturing program.

I have a question, with the correct use of P48013, manufacturing program.

The following example is real in my company:

There is a work order for the 15th of September, the date on which it is planned on September 10, and the start date is September 09, according to lead time of 6 days.

By doing the work order (WO):

Dates (DRQJ)           =      15-09-14

Date planned (DPL)   =      15-09-14

Date start (STRT)      =      10-09-14

How I can stop the scheduled date for the day 09-09-14, since the system when saving the order equals dates.