Ever since I learned that I could edit web archives like Webstractor does, I have been archiving a lot more web pages. I then go back and remove all the junk (i.e. ads, feedback, useless links, etc. I mean what is up with MSNBC articles anyway.) I think there is a problem with DTP though. It has crashed maybe 10% of the time and I have to reopen the application. Here is the web page I was just working on that crashed: msnbc.msn.com/id/13677848/
I hope you find this helpfull for locating any existing bugs to a great feature.
My practice is to capture most pages as rich text notes, based on selected material. I think that saves time compared to editing Web Archive documents. If further editing of the rich text note is needed, it’s much easier than editing a Web Archive document.
Your example link is a 2-page article. It can be captured quickly, with minimal extraneous material, by clicking on the Print button. That results in a 1-page format that can be selected and captured as rich text, with no editing needed.