Changing the footnote style should not be useful. Seem a problem with changing the content of a footnote. I have used WordPerfect long before v.5.1 in 1992 and since, and making a footnote content fix is harder to describe than do. I have learned that when I have a footnote (page) in a file, it appear as an endnote after conversion for the web.
What software are you struggling with? Is it a file on the web? These are the kinds of vexations that I fancy myself has having the ability to contribute toward a fix.
"The avalanche has started. It is too late for the pebbles to vote." -Ambassador Kosh Naranek