lponesse

So I was working on a set design and I was working on my ground plan. I accidentally deleted the pdf of the ground plan that was behind the set pieces that I had placed. How do I import the PDF and have the set pieces I drafted go back on top of it as opposed to the PDF covering everything?

I am struggling with drawing out a wall with the wall tool, and I am trying to move them without manipulating the walls in any way. How can I just select the walls that I have drawn and move them where I need them to be?

I am having trouble trying to flip the door onto vector works without having to insert it into a wall. This is for a scenic design where I need a door just by itself.