Revisions per Sheet or Revisions per Project? That is the question.
There is a misconception with Revit's naming convention for revision numbering options. People often believe that if the revision numbering is set to Per Project, all sheets in the project will have the same revisions showing, irrespective if the revision is applicable to a specific sheet or not. This is not the case at all.
As illustrated by the images below: If the revision numbering is set to Per Sheet, when hiding a specific revision on a sheet, all other sequential revision numbers will change to follow one another.
However, if the revision numbering is set to Per Project, the revision numbers will not change, thus all sheets will remain in the sequence it was issued with the correct revision numbers.