Issue DNS Zone Template permanently deactived

[origola]

Hi,

Sorry, but I don't speak English very well...

I deactivate accidentally my DNS Zone Template, and I can't undo it. It seems permanently deactivated, Now, It seems that when i deactivate it, my template dns zone only accepts external providers... How can I reset it?

I tryed with:
plesk bin server_dns --disable-custom-backend

But it does'nt resolve it.

Thank's!