Thanks Lazlo.
I notice you also lose a door if you create a curtain wall with a door, then stretch it to conceal the door, and then stretch back, the door is magically gone.
It seems you have to know what you want before you create it. It would be great to be able to modify in 3D, with a way to control the specific dimensions while in 3D.
Also being able to have the 3D window display the changes on the fly without exiting the dialogue window. But I digress to wish-list...
Thanks again for your help.
Greg Danskin - Architect
http://www.danskinarchitecture.com
AC 19/20/21
iMac Retina 5K, 4 GHz Intel Core i7, 32 GB 1867 MHz DDR3, AMD Radeon R9 M395X 4096 MB
OS 10.13.4 High Sierra