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Hi Maja, Thanks for your question. It can be hard to diagnose without looking at the site in question (the links you provided to Webmaster Tools won't work for anyone not given access to the account) so I'm shooting in the dark a little. Gut feeling says that this is a technical problem. Did you make any technical changes to your website around those dates? A few other suggestions: I'd suggest going back and double checking your code for Google Analytics and Google Webmaster Tools code to make sure they are working correctly. You can use a Chrome plugin such as Google Tag Assistant to do this. Check the hostname in your Google Analytics report to see if any other domains (not your own) are showing up in your reports. This can happen sometimes if someone has started using your Google Analytics code and your data can get very messed up. Here is a more in-depth article which may help you: http://searchenginewatch.com/article/2300842/Google-Analytics-Hostname-Report-Great-for-Troubleshooting Use tools such as Spyonweb and Nerdydata to search for your Google Analytics and Webmaster Tools code snippets to see if other sites may be using them. Narrow down the problem by adding in landing pages to your Google Webmaster Tools report. This report allows you to see which landing pages people are landing on and may help to de-bug the problem a little bit more. I hope that helps! Paddy

Hi Lynn Thank you so much for your answer :). The reason for the moving domain1 to domain2 is because of a new business plan (what we earn money on and what signals we want so send). Knowing the risks, I can better guide my employer to what options we have and what the outcome might be. So your answer helped a lot - thank you :). Maja