Oh, they'll *LOAD* just fine, but you may well find that some of the vnums don't work properly. As in some might have rolled negative.
If not, then I suppose it does have the 2 billion patch. In fact, now that I think about it, it may. The code was 80% done with that as I recall anyway, which is probably why that patch had a tendancy to fail so often.
Anyway, if the areas loaded and aren't repoting strange vnums in your logs, consider yourself lucky