I created a lengthy document in Word 2003, saved what I had as a .doc on a flash drive, then opened it in Word 2010 (showing it as in compatibility mode). The page numbers I had inserted previously ended-up partially outside the the printable area of the paper (lower right corner position).

Changing margin widths did not correct the problem, so I went to Insert/Page Number and found "Remove Page Numbers" grayed-out.

I made a second copy of the document, saving in .docx format, and tried the same thing, but this time (in Word 2010) the "remove page numbers" had a red "X" through it.

The page numbers appear to be objects, as sometimes when double-clicking I get an object box, which can be dragged, but after saving, the document's page numbers revert to their original positions where they are only partially printable.

I even did a search of the document looking for "page1" with nothing found, apparently because it's an object and not searchable text.

Without doing a copy and paste into a fresh .docx document (probably losing much of my formatting), how do I remove the page numbers, and why is the "remove page numbers" button unusable in both .doc and .docx formats?

BTW, I no longer have access to the computer running Word 2003 that the document was mostly created on.

Edit to add: page numbers are NOT in the footer area, but above the footer line.