That's a good call. Definitely only transfer info from practice questions.
However, I do believe annotating from University of Utah Webpath (
http://library.med.utah.edu/WebPath/webpath.html) and Robbin's Review of Path questions is a strong thing to do during MS2. I'd annotate from one at the end of every topic/week and the other while prepping for your SoM exams. I had encountered quite a bit of info regarding gene/cellular mechanisms and environmental path from those resources that's superior
still to anything I've encountered in the QBanks so far. Some people who have been so kind to have shared with me some of their actual exam's wtf questions had info coming from Robbin's Review of Path, for instance, so definitely go through the
first few chapters at the minimum, however I'd focus on Utah Webpath for
organ systems questions.
I would get the 2013 as soon as you can, and when you start doing your first cover-to-cover read of it, transfer over all annotations from the 2012
that you don't already know 100%, but I would definitely buy it
well before your designated prep period.