Conditional Drop down works in grid edit but not in form?

I was just about to say that. I remember the first time I had that issue, drove me nuts for over an hour.

In order for the conditional drop-down to "Fire", the two fields that you said have to match need to be present on the form. **If I recall, the only way I was able to hide the field and still allow the CDD to function was to create a section heading that was set to be collapsed by default.