Jeff,
obviously you don't run P3Dv5* like I do.
I dont have the ALL IN ONE installation, but I dont believe there are different scenery files as in the separate downloads.
Anyway, as you show in your post, the Moh Creek ADEX file is not located in the RTMM Moh Creek scenery folder in your P3Dv4 setup but in an "ADEX Folder" within your RTMM installation, right?
What is the origin of this file, I dont understand it.