Replicating BP with sales area - CRM to ECC

Hi,

I am able to:

1. Replicate ship to party from ECC to CRM with sales area data

2. Replicate ship to party from CRM to ECC BUT without sales area data

When i try to assign sales area to BP in CRM and save, it seems like it doesn't save it because when i press the 'Maintained Sales Area' button the list comes empty. SMW01 keeps showing the message Fill in all required entry fields

Help please. Thanks.

BR.