SID Activation from Reporting to During Activation for existing DSO with Data

Hi Experts,

Requirement:

I had a requirement of using Composite Provider in which I am using 5 DSO's . All these DSO's are already existing in PROD with huge volume of records also these DSO's has settings SID ACTIVATION DURING REPORTING.

Issue:

But while using Composite Provider it says DSO's should have SID GENERATION DURING ACTIVATION as mandatory so I have changed it from REPORTING to during ACTIVATION. How to handle this in PRODUCTION. (It has data in it and what will be the impact when I change this and manually activate using PROGRAM) 

Regards,

Suman K