Delta Upload into DataStore object (ODS): some fields not populated

Hello,

I have the following issue:

Data are loaded from one custom ODS to another one. Both are standard ODS. Transformation rules are all 1 to 1. When I use delta load, some fields are not populated. These fields are no key fields and both SAP and custom InfoObjects. This problem occurs with another ODS too.

I tried a full upload. This one works perfectly.

The BW version is 7.0 with SP07.

How could help me further?

Thanks in advance, Nathalie