It does my head in every time I use Poser and want to undo something.  Say I rotate an arm, move the camera to view from another angle, and then decide I don't like the movement I made to the arm.

What happens when I hit undo is that it will undo the camera movement first, then the second click it will undo the arm movement.  It's a pain in the arse because I don't want it to undo the camera movement, that's just for observation purposes, I just want to undo the last arm movement and keep the camera where I put it.

You can store your camera position under the UI Dots menu. Click on it and select Camera, from the drop-down menu (UI is default). Move the camera to where you want it and click on one of the empty dots. Then if you undo anything and it changes the camera position, just click the same dot that you stored the camera on and the camera will jump back to that stored position. You can store up to 9 dots. 

You can also use the posing camera instead of the main camera. Whichever camera you have selected when you store the position of it, will be affected by the dots. 

eta: The more direct answer, if you have this option, select the camera and go to the Properties tab (next to Parameters tab) and uncheck "Remember changes for undo" if you have that option. That might be a more simplistic approach. Not sure if it's available in P10. Should be tho. I just discovered it. 

~Shane

I'm glad you posted that ETA part, that's exactly what I was wanting, perfect!

I'll have to resave my default scene with the setting unchecked.
Cheers, it's been driving me nuts that has!

Poser has a ton of features, but a lot aren't obvious. :) There's also a keyboard shortcut for camera restore, as well as light restore, figure restore. Also Ctrl Z which is the standard undo command for most windows programs works in Poser. I've used it' a ton :)

Edited to add

The Ctrl Z funtion remembers up to a certain number of steps. If you created a scene and made a series of mistakes you can undo many of them (in sequence). There is also a redo shortcut key (it's under the edit menu, the actual key combination escapes me at the moment).