removing / revoking certificates openvpn

[drifting]

Hello
I have made a total mess of the installation of Openvpn. Is there a quick and dirty way to remove all the certificates to attempt a clean start / install?

Thanks
Paul.

[juere]

If there are many certificates I would do a backup and restore and edit the generated xml file in between.
The certificates, ca's and crl's are easy to find in the xml file.