Thanks for the response.
I should have provided more details. The issue or offending note can be seen everywhere except in the legacy app.
I can find the note on line, on my android phone, on my Ipad and all my Windows PCs.
In my case the note:
Has a title but cannot be edited
There is no note content in the Windows app, the web app, shows unavailable in the android and I can find but not open it on my ipad.
It does not show that it's in a notebook
It cannot be tagged, moved or deleted