Terraforming help please

Maybe you can help me with this
I used polygons to terraform the ramp area as seen in the picture.

Looks good in SDK, but when I open the scenery in the sim it doesn’t modify that area

This never happened to me, what am i missing?

Yep terraforming seem useless, I have noticed in several attempt that the editing does not look anything like when exported, even by adding a single small terraforming polygon the whole area changes to then change again once exported.

It would not be an issue if the sim wasn’t OVER TWO YEARS old…

Did you come to any conclusion? It makes zero sense that what you see whilst developing does not match what’s exported, it defeats the purpose of having an SDK!