Air suspension and bushings

What is your question?

I'm getting ready to change the lower arm bushings on my 2006 Ranger Rover Sport and noticed that I have to dismantle the air suspension. Since I'm not very familiar with air suspensions, I was wondering if I need to be aware of any specific pre and post instructions for the proper disconnection and operation of the air suspension (after i replace the lower arm bushing). The bushings are worn out (because of 22" wheels) and I need to replace them ASAP. I can use any advise you can give me. Thank you.