Exit Countersink in hole shape not showing up
I am running Creo 10.0.6.0 in combination with a CAD management system, OpenBom we are going to be moving to a better system Windchill or team centre.We also use Github to share config files.
I found that I could add exit counter sinks to holes something that we had not used so instead had an unattached note added to a hole note stating both sides for a double countersink.
We use a combination of simple holes which I also parametrized and ISO standard holes.
In this image it shows the exit countersink option greyed out as its not a through hole which I understand

In this image that option is gone, Why?

I am in 2 different sessions both in Creo 10.0.6.0. The first image was taken with a part outside OpenBom and the second was in OpenBom, though I don't think that will affect anything
I initially thought that it was due to Creo versions but when I updated to Creo 10.0.6.0 from 10.0.3.0 on a test laptop it did not have the option.
What is defining whether exit countersink option is present in the hole shape?

