Your menu has lasted.
I've added a grphic menu with updates. I've deleted all my icons AND 2nd level sublevels from my menu to see if it lasts like yours does. I'll see how it looks tomorrow. If it doesn't work I'll just add a single level menu with no icons.
Sorry about my prior message: I was so hysterical earlier. I need to learn to let things go.
I turned my MEC, SG Optimizer plugins on again to see if they made any difference.
Thanks for your patience and empathy.