I think this is a different problem. @NehalDaveND, when you want to copy a page with working footnotes (<ref>
tags), you have to first open the page in the visual editor. If you copy the regular page (as if you're reading any other website), then it copies the links (the blue click-able numbers themselves) instead of the ref tags.
Fixing this requires a huge number of changes to how wiki pages are stored. (Basically, when you copy a wiki page, the normal page needs to be able to tell your computer that it's not copying a normal link.) It will be at least a year before that is truly fixed. In the meantime, if you open the page in the visual editor before copying, then the visual editor can provide that extra information.