I have several instances of the same curtain wall in a project. For some unknown reason, one of the instances will not let me do anything to it - stretch, rotate, mirror, delete...and even the "pin" is grayed out. When I click on the curtain wall, the only thing that appears is the double arrow "flip wall" symbol. The "make element editable" and "configure grid layout" symbols do not appear. The only thing I seem to be able to do is move or copy it.
The other instances of this same curtain wall are fine. The "flip wall", "make element editable" and "configure grid layout" symbols all appear when I select them, and all of the normal operations are available to me.
This is a local copy of a central file, however I am the only one working in it today, and have tried working with the wall in the central file directly.
Any help would be hot.