is this a muse question?
Please post the name of the program you use so a Moderator may move this message
A program would be Dreamweaver or Muse or ???
It's hard to figure what could have gone wrong with your process in-between. My simplest solution would be for you to recreate the menu from scratch, and let us know if you are still facing issues.
Yes, I've recreated it and now it works.
I still don't know what was the issue but it's okay now.