Guide on adding a new model, animation, and creature to HoMMV

The problem is that texture transparency doesn't work after loading with Archangel 0.5. In the map editor, statics have a ScalePercent parameter that allows you to change the size of objects. It works incorrectly with objects rotated by 90 and 270 degrees. To fix this, I had the idea to load new geometry for the static (my object is the Antimagic Wall - a dark brick garrison wall), identical in parameters, but rotated by 90 degrees. Using Archangel, I obtained the geometry in .obj format, imported it into a 3D editor, rotated it by 90 degrees, exported it back, opened it in Archangel, and created new geometry. And then the problem arose: this geometry only displays textures with AlphaMode equal to AM_OPAQUE, which does not support transparency, which spoils the appearance of the object. To make sure that it is Archangel, and not the 3D editor, that is causing this error, I converted the standard geometry to .obj and back. I also tried using .smd - it doesn't help. Is there a way to load geometries through Archangel while preserving transparency, or is there a way to fix the scaling bug in the map editor?