Currently Being ModeratedMar 2, 2013 7:41 PM (in response to ebrind)
it's in /etc/certificates
you can import it back into the Server app.
when you import, you will need the passphrase. You will find this in the System keychain.
when you look in /etc/certificates, you will see a string of characters in the file name. Search in keychain for that string, then choose to show the passord.
thats what you'll need when you import the cert/key back to Server app.
I can post more specific instructions later..but maybe thats enough for you?