[TF2, 8860] Texture shift of $basetexturetransform scaled materials is reset when saving

[worMatty]

Hammer++ for TF2, build 8860.

1. Add a material which scales the texture up using $basetexturetransform.
2. Using the Face Edit Sheet, select a face and give it a texture shift.
3. Save the VMF.
4. Open the Face Edit Sheet and select the face. The texture shift will have been reset. The coordinate changes are not saved to the VMF.

This is a 'bug' in standard TF2 Hammer as well.

A couple of sample materials and textures are attached. duke3d.zip