See http://community.logos.com/forums/t/84638.aspx for the background with a PG on Gen 6:1-8.
Whilst searching the Footnote text field trying to reconcile the X-refs listed with those obtained from my bibles stated to have the Cross Reference trait I came up with Nu 13:31-33 from HCSB (fn b in Ge 6:4). Nu 13:31 is not listed in the PG, presumably because it is not a Cross Reference fn. Yet the PG gives results from TNIV (2012-04-30T20:44:52Z) which does not have a Cross Reference field.
