Port a machine from arm64 to amd64

Hello All,

I have a mailserver that runs OpenBSD 7.8 arm64. I want to transfer this installation to a amd64 machine. Do you know of an easy way other than manually copying the config files to a blank amd64 installation?
Maybe automatically select all architecture-independent files and use them to overwrite the corresponding files on the amd machine?

Thanks for any help,

Heinrich