Terrain never accurate after you save and build scenery please fix

Hey Guys
Im writing this topic because it needs to be addressed. I have been creating scenery for my flight sim since FS2004. I have recently created about 50+ sceneries for MSFS 2020 airports all over Alaska because that’s all I fly is BUSH country in this great state. I have an issue though and that is every single time I create polygons and get the terrain perfect to the way I want it displayed, it never is this way once you save it and build scenery and then exit and add it and then go back to check it. Once you get in game again you go to the scenery you just built and its 99.9 percent of the time not the same as you left it once it was built. Can you please fix this in game so that once you place the polygon the way you want it and save it that it displays properly as it should. I cant tell you how many times I had to exit game, then adjust scenery and then rinse and repeat it 20-30 times just to get the scenery polygon to show up as I need it. PLEASE fix this.

You may won’t to give samples about what you mean with “terrain”

As a rule of thumb,
Don’t use polygons do make terrain

Aprons are way more precise than polygons when using them to lay down ground materials (this by the way is a known issue, and should be documented if not fixed)

If you mean using polygons for terraforming, again, the rectangle terraforming is your best option

I’m talking about leveling the terrain on and around airports, it’s ridiculous the way asobo just threw airports together and now we the players have to make all of the corrections. Don’t get me wrong I do enjoy a challenge but every airport in Alaska has multiple hills on them to the point that making a nice landing without adding polygons is near to impossible. I would just hope that in future updates Asobo or whoever is in charge of doing the terrain for Alaska would update them. I’ve already done about 60 + airports and I’m currently doing PAGY and PAHN.