Both of the EAPs in the attached file are supposed to be walls, which follow a 3d path (curving in plan and changing in elevation along their length).   I have 'lock profile plane' ticked. My understanding was that this means that the profile remains perpendicular to the X-Y plane as it follows the path (thus creating a vertical wall that doesn't lean over). This is not what's happening though.   Am I doing something wrong?   Profile:     result