Discrepancies in PA and LRDs reported in different SEOmoz tools

[Websensejim]

I've noticed a difference in the reported PA and LRD numbers for URLs depending on whether you use Open Site Explorer, or look at the same metrics from within the rankings history (in your campaign set up). I've checked this for a few URLs and what I'm seeing is the reported scores for PA and LRDs is different 9 times out of ten. The PA is sometiomes higher on one report, lower on another, or vice versa. Same for LRDs.

I thought it might be because one report was lagging behind and using old data, but that would only make sense if I was seeing an increase in reported LRDs, but it just as often shows a decrease !

Is this just a bug in the campaign>rankings history report or is there a reason for the discrepancies?

[kwoolf]

I notice similar behavior in my campaigns. Comparing LRD here to the list at Google WMT, I find dozens of LRSs (even from domains I'm not familiar with) that don't show in my SEOmoz campaign reports or Open Site Explorer. I second the question and have even posted one of my own here: http://www.seomoz.org/q/linking-domain-dropped-followed-by-significant-decrease-in-domain-authority.