MDG Replication model required for MDGF with Co-Deployment?

Hi MDGF experts,

We are implementing MDGF 6.1 and I am not sure if I have to set up a replication model if MDG should send to the same client(Co-Deploy) and if we need to perform Key mapping if we use the standard OG data model.

In another document I read that you still have to setup Replication model for MDGF if you post to the same client. http://www.sdn.sap.com/irj/scn/go/portal/prtroot/docs/library/uuid/6043b83f-1a37-3110-cd8e-f2dabb672019?QuickLink=index&… but this document is for MDG 7.

If, I do indeed have to setup Replication model do I use Replication via Idoc, services, RFC?

Your help will be highly appreciated

Thanks and best regards

Riaan