Contract Account delta load not happening

Hi Gurus,

I am doing integration between ISU and CRM 7.0. I have achieved integration both sides for BP . I have also done initial load for Contract Accounts using object 'BAUG_MAIN'. We are able to see Business Agreement getting created for the Business Partner in CRM but when I change the data in a particular Contract Account in ISU or create a new Contract account after the initial load it is not trigerring Delta Load for the Object.

Please help me for the same.

Regards,

Nasreen