Inner board outline cut-out to Gerbers

[alekyakoi]

Hi everyone,
I would like to do an inner outline (a hole in the center of the PCB).
I did on mechanical 1 a circle then selected it and Tools->convert-> "create board cutout from primitive" , in 3D it works fine, but when I generate the gerber and send it to the manufacturer, the hole in the middle doesn't appears.
The outline of the PCB should be on mechanical 1 right? If i look in the .GKO (keep out layer) there is nothing in it. Is there any thing that I missed?

Thank you for your help

[robertferanec]

We always create a special layer called Board outline, where we draw the PCB outline and then we use it in gerbers and documentation.

[alekyakoi]

Thank you Robert, but why they can not just use the mechanical 1 as Board outline?

[alekyakoi]

Well to do it more simple I just put a hole with no copper (not platted)
What do you think?

[robertferanec]

Many people do things differently. I think the best is what you feel is right