JMCDA - pictures were going to come next if I couldn't get it back on. :-)
My hinged plate worked like the one in the youtube video that cabbagepatchkid linked to. Came home, was able to slide it right back on.
Was very happy that I hadn't created an additional item to fix!
However, I can't get the cabinet top closed. Cannot figure out the trick. I'll have to post pictures of that tomorrow. On my dinosaur computer at home, having problems with it and pictures.