Derek, I don't know, but first of all if I were you, I'd get this moved to one of the Technical Boards.
Click on 'report to Moderator' and ask them to move it.
Some of the techy people will surely know, but they also might not look at posts on "The Common Room"
If FamilySearch allows upload of Gedcom files, wouldn't it be the same as however you do it with any FH program?
Dawn M