I've long used honey and propolis for burns & cuts. Reading the aforementioned articles ( more like skimming) it appears that the "beneficial bacteria" come from the bee gut, and don't last long in the "anti-microbial" environment of honey - certainly not as long as it takes to crystallize. It does, however, show promise as a new tool in the battle against AB resistant pathogens.
If I understand correctly ( & forgive me - some of this is very new to me) spore based pathogens can survive, non-spore based (the beneficial bacteria) tend to dwindle in a matter of weeks. Dilution of honey (as when applied to a wound) releases hydrogen peroxide. The hydrogen peroxide is apparently not the sole source for the "healing nature" of honey.
In general, it appears - when it come to re-liquifying/re-warming honey - that the less heat you can apply, the better, in terms of the amino acids, lipids, vitamins, minerals and enzymes, (and beneficial bacteria). As far as "de-crystallizing", something in the vicinity of 115-120*F seems to be necessary to delay rapid re-crystallizing.
This is an interesting discussion - thanks for the insights. (and any more...)