Problems after converting from in-text parenthesis style to footnote style, ended up with seemingly "double" set of styles

Hi,

I have a document whose references are messed up after I converted from an in-text parenthesis style (Sage Harvard) to a footnote style (Chicago 16th Footnote). I changed the style by changing the assigned style in the “Style” field on the EndNote tab in Word. Then the in-text references seemingly diseappeared, but the bibliography remained. I then (and I think this is where I mad my big mistake) manually added footnotes and inserted the relevant references in each footnote. Everything seemed fine. But when I decided to delete three references (by deleting the corresponding footnotes), the deleted references still showed up in the bibliography (I did not refer to these references anywhere else in the text). When trying to figure out why the deleted references still showed up in the bibliography I changed the style back again from Chicago 16th Footnote to Sage Harvard. Then I saw that the references I had deleted in Chicago 16th were still there in Sage Harvard! I then deleted the references in Sage Harvard as well, but this did not solve the problem. Instead, after pressing “Update citations and bibliography” in Word, what happened was that the references I had deleted twice (first deleting the Chicago 16th footnote reference, then deleting the Sage Harvard in-text reference) reappeared in the text and all other references appeared as double in-text references. (see attached image: the first reference is supposed to be there, the last three references are the ones that I deleted).

How can I fix this problem without having to delete all traces of EndNote formatting from my document and add the references from scratch?

Thanks in advance!

Marielle