Read and head and learn about this, if you are going into that upgrade.
On the A liner owners web site, alinerownersclub.org they have a DIY - Do It Yourself section. In that section, an article is posted that explains how to change the lift springs on an A liner. It is titled "Roofing It".
The well written article has pictures and explains the process, although note that some "manipulation" of the roof panels is needed.
The Rockwood A frame springs are probably similar, although I cannot answer to that. And, you can be sure that when those springs are new, they have high tension. It looks like the panels need to be straight up to release all tension for replacement.
This is an area that has no posts by Rockwood Aframe users, and probably with good reason. It is likely a dealer process. I decided not to venture into those springs, and added a lift actuator instead. I am now deliberating about adding a couple of gas struts to further supplement the lifting, although probably not needed.
Got bit by the mod bug...