Foreclosure Sale on 1st & 2nd within 4 days of each other - NC

[David Tyrell]

So, curious to hear from some experts in the NC Foreclosure/Auction world.  I've identified a house that is going to auction, but the 1st lien sale and the 2nd lien sale are within 4 days of each other.  The 1st lien is up first, then the 2nd.  I know ordinarily, the 2nd will be wiped out (if recorded after 1st) but has anyone seen this before?  

What would happen if someone upsets the 1st lien Auction which pushes the upset period out further than the 2nd lien sale?  Does pure race state play into this?

Thanks