I apologize that my original post was not clear enough here. Let me make a more concrete example.

Footnote 200 is blank
Footnote 201 contains the information that should be in the position of Footnote 200 and so on through the rest of the document. All subsequent footnotes need to be moved up one position.

Simply deleting the blank Footnote 200 will not resolve the issue because the footnote that had been number 201 will be in the wrong position in the document and all subsequent footnotes would remain in the wrong position.

Thanks again!