I'm afraid I don't know about that; I have only the short edition of Kinsley's Burns; so without the detailed notes (Masato may have the larger book and be able to help more). It certainly does seem that Burns modelled his song on the earlier one, though; the Greig set of Molly Stuart (however you care to spell it) contains a verse very close to one of Burns'. Molly, assuming the one set I've seen is typical, is one of those songs in which the heroine dresses as a man in order to follow her lover to war; which appears to be in Germany in this case, though Ireland turns up as well for some reason.