I don't know when this happened, but I would say that an update within the last 6 to 8 weeks caused this:
Before, it was pretty easy to setup a CAH scenario which is based on the Bohemia Capture & Hold mod by selecting the dependency at the New Project screen. There are some nice YouTube videos about that and I published three to the community.
This option now is gone and to make it even worse: I am not able to edit my existing CAH scenarios anymore.