If a domain’s zone file has disappeared from the DNS server’s configuration, Plesk has included a tool that can be used to resync zone information, within the Plesk database, to the DNS server’s configuration.  You can use the following command to resync DNS zone information for a specific domain (replace yahoo.com with your domain name):

C:\Program Files\SWSoft\Plesk\admin\bin\DNSMng.exe UPDATE yahoo.com

After running this command, the DNS zone information for that domain should be resynced into the DNS server’s configuration. This tool can also be used to globally resync ALL domains’ DNS zone entries. To do this, run the following command:

C:\Program Files\SWSoft\Plesk\admin\bin\DNSMng.exe UPDATE *