View definitions question

I have controller buttons assigned to views 5 to 9 in my fsx.cfg file. They work fine with other add-ons but they do not pickup NGX CameraDefinitions.xxx settings. Is there a difference between CameraDefinition.xxx and CameraDefintion.x ? I am making another attempt to like FSX. Still an FS9 fan so I am not overly familiar with the way it works - hence the question. Thanks PMDG for the 2D panel. Great marketing decision if you ask me.