Manual vpn credentials ( psk, etc... )

Hi!,

Is there the ability or way to extract the manual credentials ( psk, secret, user/pass ) used for the vpn to manually add them in to a router that does not support installing the package?

An additional concern here is altering my UDM or edge router, running in to an issue and having to rebuild the config again, or potentially an upgrade wipes it out.

Thanks!

The full configuration is available when downloading the .ovpn files from a user configuration.