Planned Order Created in SNP has different dates in APO and ECC

Hi Friends,

I am creating plannd orders in ECC using SNP Heuristic.

Since Heuristic has 1 day as scheduling time so it creates planned order with start date : 07th June 2014 time : 00:00 and end date : 07th June 2014., time 23:59.

But when this planned order is transferred to ECC it reschedules the planne dorder accoridng to the capacity and recalculates teh date as

start date : 04th JUne 2014 and End date : 08th June 2014.

Because of this client is finding difficult to plan the materials.

Can you kindly guide me on whether we can prevent this rescheduling in ECC or transfer these rescheduled dates from ECC to APO.

thanks

Johnny