I will share how we handled the bed panels in our van. We had one fixed panel in the rear and three loose panels. When the top was up we stacked the panels in the rear of the van. But that took time and we had to take down the bedding before stacking the panels.
I created a large fixed panel and connected the panels with piano hinges to create a folding bed that can be raised is seconds and is completely out of the way. It can quickly lower and keeps the mattress and bedding mostly in place. This setup has work well for us.
Here is the link to my build thread that give some details on how I CCV setup. Post #92.