The discussion about reworking the Document Properties dialog should really happen in it's own thread and/or bug report.
So back to the initial topic about including document property changes when hitting Ctrl+Z.
The control-z thing is even more uncecessary because you can undo those features by using the document properties menu.
Which menu are you talking about? If you mean the Document Properties dialog, how can you undo the changes you made there automatically?
Obviously the opinions on whether to include document properties when Ctrl+Z is pressed are split. So what about introducing an option to control this behavior? A quick vote could then clarify, which behavior to choose as default.
For clarification, when you're talking about Ctrl+Z you actually mean the undo history, right? Because it could also be that the Undo History dialog includes all changes, i.e. to the contents and the document, while Ctrl+Z only reverts content changes.