STEPS TO REPRODUCE
1. Launch iClone 6
2. Load a project that two characters are standing at two balls
3. Pick the left ball (The right ball has attached to the left ball), right-click and select "Convert to Terrain"
4. Go to Modify, uncheck the box for "Use Bounding Mesh"
5. Observe the character's feet

ACTUAL RESULT
The cancellation of “Use Bounding Mesh” doesn't work for the right ball

EXPECTED RESULT
If a sub-prop is converted to terrain, disabling the bounding mesh will affect the sub-prop