how to refresh a quality system without losing some customizing data

Hi SAP gurus...

Our functional team wants to refresh data on the ECC Quality system, by copying it from the ECC Productive system. But, at the same time, they are developing some projects and configuring some new SAP modules on the QUA system and they don't want that information to be destroyed by the copy.

I'm thinking of using transaction SCC8 to do the job (client export) at the PRD system and then, import the requests on the QUA system. However, I don't know what profile I should use to copy only data between systems.

Can you help me on this?

What profile should I use on SCC8?

Or... is there another way to do this?

Thanks

Antonio