Hi there, thanks. I did this but still did not see the folders assigned to the 757 NGXu...
You are not supposed to see any folders. In fact, that's exactly what you are supposed to see: NO folders, because I said to remove them, so the internal GSX configuration could take over.
It's only after you'll eventually make changes yourself (not that you need to, since this new configuration is correct and complete), using the GSX airplane configuration editor, that those folders in %APPDATA% will re-appear again, based on the internal configuration.