Features - Is there a way to push changes back into the database
Once the module generated by Features has been activated and the status on the overview page reads "Default" the changes are in the database. "Default" means that the database configuration matches the configuration defined in the module. (The status "overridden" indicates that the module generated by Features does not match the database configuration.

I think what you want to ask is, "How can I disable a Feature-generated module without losing the configuration that it provided?", which has been asked on this site before.