The company I worked for changed their domain about a month ago and updated the URLs for all of the pages. We mostly removed the .aspx from the ends and decreased the depth of many of our pages. We created a sitemap.xml for the new site and added 301 redirects from the old pages to the new within the site. We did update our address through Googles Webmaster tool so they know.
Once Google crawled our site we saw a drop in our Google imprints from nearly 1000 to just 20-30 a day. We know we missed a few redirects that have now been fixed (probably less than 10%) but we are still not going back up in impressions.
Is there anything we should be looking into or is this just a natural occurrence caused by us switching pages and domains?