There is some validity to issues with installing versions in reverse order. I went back to reinstall something with X1 after installing X1->Platinum and the fonts for my staff view went FUBAR (there is a
thread here on it, and I was sent a file (TTSNOTE.ttf) that fixed it). If attempting such, I would recommend creating a restore point first and copying all shared files to another location before the installation. You should then be able to copy the shared files back to replace any that X1 overwrites.
As to the gif above, Reaper has a free utility that does screen captures (as gifs) called
LICEcap. You will still need a picture hosting site to post them, but they are very convenient at times.