Import CREMDM (ADRMAS & CREMAS) into ECC

Hi,

We need to import the CREMDM Idoc into ECC using PI/XI.

According to MDM->XI-->ECC CREMDM->CREMAS+ADRMAS the CREMDM IDoc has to be split into ADRMAS and CREMAS.

Using PI/XI it is possible but we have the problem that there are required fields which are object type and key.

Since vendor numbers are being assigned in the ECC system, we can not supply the object key yet.

Is there any other way to solve this? Or is there any other scenario then to split the CREMDM IDoc into ADRMAS and CREMAS?

Thanks!