SAP MDG as HUB in ECC -Integration and Data replication to SAP on HANA System

Hi Experts,

We have implemented SAP MDG to one of our client as hub model .

Now, Our client is seeking to upgrade SAP ECC system to S/4 HANA Keeping the MDG hub System intact.

Is there any precautions needs to be taken before we upgrade the SAP System to HANA with respect to system integration and data replication from MDG HUB?

and also ,is there any Key benefits on Migrating SAP MDG on ECC to SAP MDG on HANA?

Regards,

AN