Projected meshes not shown

Since SU6 my custom TWYs (projected meshes) are not displayed in editor nor in the package. Some parts of the projected mesh are displayed all the time, some parts in a reverse logic are displayed if zoom out but not displayed if zoom in, some parts are not displayed at all.

All my airports have been affected. Only large projected meshes (TWYs) have been affected.

For testing purposes, I can send the project, if needed.

Any hint?

My projected mesh exported from blender alter new msfs update disappaered in a part of the terrain mesh when i move PM location, before upgrade all was perfect

In blender, object mode, select all objects then Object → Apply → All Transforms then re-export your model.
Delete “unknown” objects in scenery if any.

Thank you!!!, now its work!! solved