DNS-Zones disappeared

I reciently made some changes to the Default DNS Zones and everything seemed to be OK. Tonight I added some PTR records and performed a SSH software update. Now all of my DNS records are missing. Is there a way to get the old records back or do I have to manually reload them? All the services and webaites are up and running.

 

The Zone files are still in /etc/bind but do not show up in the ispconfig interface.

 

I started playing with the client drop down and all the records came back.