Is Open Site Explorer ignoring 301 redirects now?

[gametv]

I just recently saw a huge decline in the page rank of a specific page on my site.  When I investigated a bit further I noticed that the drop in page rank looks like it is due to the fact that most of the links to the page come through 301 re-directs from an old page.  I know you just made a change to Open Site Explorer.   Did you change the way that you are treating 301 re-directs?

Here is the new page:

http://www.justjen.com/shop/big-sister-tshirts.htm

Here is the old page:

http://www.justjen.com/shop/bigsister-tshirts.htm

Up until the last couple of days, the new page was showing the links from the old page in your cache, but as of today, the new page is only showing the links that go to it, not the links to the old page that is re-directed to it.

If there was a change recently, was this intentional (trying to replicate the search engines better) or is it an oversight or database anomaly?

[carinoverturf]

Hey Lawrence,

The changes made to the PA model do not treat 301 redirects any different - we haven't made any updates to how we handle redirects. However, if you've seen a drop in your links, we probably didn't crawl the pages redirecting to you. This would definitely affect your PA score.

I hope this helps, but let me know if you have more questions! If you want to find out more information on the new PA model, Matt Peters, the engineer who worked on the new model, has a great blog post here:

http://www.seomoz.org/blog/introducing-seomoz-updated-page-authority-and-domain-authority

Thanks,

Carin