Change location of vault cache for users who already have one?

I am looking at changing the location of the virtual vault cache for all users from the default to a home directory on a network location. I was reading through the options on this, and ran into what seems like a show-stopper:

Root folder search path-

The location in which to place Vault Caches. This value is used when a user enables Vault Cache. Changing this value has no effect on existing Vault Caches.

Is there some method I can use to either:

• force users to create a new VVC in the new location
• use a script to copy the content of their current local VVC to their new location and kickstart them from there?
• something more elegant?

Thank you

Nate