Not sure what petzl one either but, theres a simple way using a cambium saver with rings cut off and replaced with karabiners (or just a sling with krabs, but they tangle a bit). Place cambium saver as re direct and clip one karabiner to each part of climbing system above friction hitch. Work away. Descend. Remove climbing line as usual and after it collects your rope guide or cambium saver from the TIP it will then collect the re de as well.
Down side is it often gets stuck (Jon whatsisname knows this only too well) and also it can then only be retreived from the ground by taking the whole climbing system out.
To collect the re de only is a whole different ball game!!
The above method could be combnined with the post I made about dropping your rope guide onto your access line. Clip access line to climbing system above friction hitch before moving out to where your re de is going to go. Attach re de as above. Descend. Remove climbing line in usual way advancing friction hitch back up the rope as you do so and let ropeguide drop onto access line.Tie stopper knot under friction hitch. Pull down access line to collect rope guide.
Keep pulling your climbing, line splice end, which you now have. Your friction hitch and krab plus stopper knot should collect whats left of your re de on it way back up and over. If you get it stuck you might still have enough climbing line to pull it back and forth until free.