W3TC on multisite : “force” common configuration on each blogs

Hello W3TC support,

I am using W3TC on a multisite, and i have enable the feature to use independent configuration on each blogs.

I have 10 blogs, some of them use the common settings, and some have specific settings.
Now, i want all of them to use common settings. But i want to keep the ability to enable specific settings later, so i don’t want to disable to feature to use independent configuration file.

Is there a way i can “force” the common settings on all blogs ? Or the only way is to do it one by one manually ?

Thank you for your help