When moving VDSs between servers that do not use DD, the property "dns_ip" is transferred from the original server.
After moving the VDS, the "DNS Enabled" property for target VDS would be disabled and at that point you can't enable dns for the VDS using the Java GUI.
This is an SD 3.5 move VDS bug.
It was fixed in SD3.7i27
Use API command to change the property "dns_ip" to the SD IP and enable the DNS for the VDS
1. Disable DNS in VDS level
2. Set dns_ip property in XML to SD ip using API command
3. Open <VDS_BASE>/var/adm/db.domain in any text editor
and replace SPHERADNSMANAGER IN A <DomainDirector IP> with SPHERADNSMANAGER IN A <ServerDirector IP>
4. Enable DNS in VDS level