after crashed PLESK. return namedb folder

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hello

before six month back my PLESK server has been crashed for some reasons
and this server has more than 300 domain , but the GOOD think is all these domains have DNS hosting only
mean only pointed to external IPs (A/MX) NOT have any web hosting or email service
what i do, i had copied "/etc/namedb" folder and run it on other server, using bind
but the problem now for adding any new record each time i have to do it from command line
now i want to retains domains back to PLESK control-panel that i can manage it from web-access
any idea how can i do that like (backup, migration) without creating domain one by one