Difference in time for order in APO and ECC

Hello Experts,

We are facing a strange issue, where the Intercompany order date and time in APO and ECC is different.

For eg-

Material X at location Y has an Intercompany order with availability date as 10.05.2014 at 23:59:59, when we check the same order in ECC, the order time shows as 11.05.2014 at 00:59:59. This happens only for Intercompany order and for standard order the time remains same.

We checked the system time for both APO and ECC systems. APO system time is UTC and ECC is CET which explains the difference in order timings.

1. Why this issue is for Intercompany orders only and not for Standard orders?

2. How can we correct this without changing the system time.

Any pointers on this is highly appreciated.

Thanks

VPrakash