Can deploy Map and Schema to existing BizTalk solution?

 Hi,

Would it be possible to deploy map and schema to existing(running) biztalk solution without undeploy and redeploy it?

My case is, i will receive a general xml from backend system with partner ID. I need to map and send it to partners. I are going to add more partners in the future. So I need to add more schemas and maps in the future. I cannot stop, undeploy or uninstall running project when i add new schema and map in the future. Would it be possible to do this under one project?

I am thinking to creat one project to receive file, call A. Then create seperate project for each partners and reference to project A. So if i have 2 partners then I will have 3 projects. when i add new partner, i dont need to change anything on existing projects. Incase, if any of our partners change their schema, i can modify it without effecting other project/partners. I am not sure weather this is a good designing or bad. Could it be possible to do all these in one project? Any feedback?

Thank you in advance,

Siva