I would say "it depends".
(I am also in the middle of moving house, so hear me out....)
If you're planning on STAYING in the current house while the system is there, and you don't live in a high-crime area, It's probably safe to leave the system set up.
If you're planning on vacating the house while it's on the market, I'd definitely pack it up before taking any pictures.
Fortunately, in my situation, I own both houses, so it's just a matter of moving the stuff from one to the other. In other words, I got the expensive stuff out before it hit the market. I also live in rural NH, and, well....you wouldn't want to get caught breaking and entering someone's residence up here, if you catch my drift. 😉
If there's any doubt, err on the side of caution. Not worth the hassle, risk, paperwork and subsequent court appearances.