Subservers DNS config in master config - how to split?

Since don’t know when virtualmin on one of my servers stoped to write individual files for every single subserver of master. Instead of writing individual files it is writing everything into masters file.

Where this can be setuped for every sub server has its own *.master.hosts file ?

Thanks a lot.

Not enough reading - layziness - it is of course in default template from which sub-server and other templates which I’ve generated takes variable - WHERE TO STORE DNS RECORDS (or something like that).

Sorry for disturbing