Activating MDG Business functions

Hi,

We are trying to activate MDG 8.0 business functions on existing S4 HANA 1511. before that we wanted to know if this activation affects any existing configurations or process settings we have done already for finance such as controlling area, company code etc. Just to make sure we are not re-doing the things.

For ex: We start with MDG finance configuration and first item is business functions. Considering that we have some configurations/processes already in place for finance in S4. Is MDG business functions affects them in anyway? Or It just activates MDG finance related features and capabilities within the MDG and do not have any impact on existing configurations and data?

Thanks

Praveen