P3D v4 Flatten or not?

I release the CYYY airport scenery build with FSX SDK. It well displays on FSX. But not in P3Dv4.


Look the scenery in this screen send to me by a P3D pilot. You see the taxis and the end of the main runway (at left of the Maule's left wing). The scenery have a Flatten Exclude Autogen that covers all this runway.

I dont have P3D installed and dont plan for install it. What I have to do to make the scenery P3Dv4 compatible with FSX SDK?


Oups... I duplicate the thread in the wright place : Airport Desing Editor.
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