Phantom sheet that I can't get rid of

[jrayhorn]

Revit 2020.
Using a template given to us mandated by the project owner, I have come across a phantom sheet. By that, I mean that it shows up in the Sheet List schedule, but does not show up in the Sheet Index schedule or the actual list of sheets in the project browser (see screenshots).
I can rename the sheet in the Sheet List schedule (which you can see, I have done) and the fields for the Index & List are the same & checkbox for itemize all instances are checked in both.

If the sheet exists, why doesn't it show in the project browser? How can I delete this phantom sheet? The client has a number of QC checking softwares (etc.) that will surely turn this up as an error when we go to submit.

Can anyone out there help with this? We are completely baffled by this.

Please & thank you in advance!

[L.Maas]

Duplicate post. See other thread HERE.

[jrayhorn]

Very first line says Revit 2020, but it's 2020.2 to be exact.

[jrayhorn]

Not sure how the double post happened.  How can I delete the other post?

[L.Maas]

You can not. System does not allow deleting threads/posts

[jrayhorn · Accepted solution]

Solution found in another Revit forum.  

The Answer 

Autodesk reference