How to: Copy footnote or endnote.
Solution:
Select the reference mark in document. Copy and paste it to the next position.
1) Select the check box note or end note reference mark in the document.
2) Select the 'Edit' menu and select 'Copy'.
3) Position the insertion point where the new reference mark should appear.
4) Select the 'Edit' menu and select 'Paste'. (The check box note text is copied and assigned to the correct reference mark.)