Hi Hazel,
I placed Cabinet Base 2D and Cabinet Wall 2D in AC11 and in AC13. I found exactly the same door and mullion options in them. Namely, I can change the number of horizontal and vertical mullions but cannot edit the position on them. So I don't see any difference between them.
If you could describe the problem in a bit more detail, we may be able to look into it.
Regards,
Zsolt Táskai
ArchiCAD Development - GDL Team
AC13, AC14 and upwards...