We are seeing some quite strange query data in Google WMT. Keywords which are getting impression and clicks one month disappear 2 months later (but doing a bit of rank checking proves our site still ranks for many of those keywords) This doesn't add up.
So I've been doing a bit of research:
There are a couple of popular (and conflicting) blog posts about the value of Google WMT query data.
It seems pretty clear that WMT query data is becoming less valuable because of secure search / not provided and limited visibility of keyword data. Google apparently promised some solution to this earlier this year.
Have there been any developments?
One thing that I have picked up:
Google publicly say that "Webmaster Tools shows data for the top 2,000 queries that returned your site at least once in search results"
However our own WMT account reflects over 14000 queries for the last 30 days. Is Google's documentation out of date?