: ArchiCad 21, 20
WALL_MAT_A / WALL_MAT_B works fine when the wall’s cross section is rectangular (WALL_CROSSSECTION_TYPE = 1). But when it comes to Slanted /Double Slanted Wall (WALL_CROSSSECTION_TYPE = 2 or WALL_CROSSSECTION_TYPE = 3), the information from WALL_MAT_A and WALL_MAT_B is swapped.
