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Understand information in your reports and troubleshoot reporting issues such as self-referrals, (not set) data, and inaccurate information
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Changed calculation of unique pageviews

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# 1
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I collate Google analytics data for our website that I include for a report that I send out on a monthly basis. The way that pageviews and unique pageviews are calculated seems to have changed in the past month. For example when I downloaded the data for February 2017, in March there were 39,711 unique pageviews. When I looked at the same data today there were 87,962 unique pageviews.


Why has there been such a dramatic change in the number of unique pageviews? Has the way in which this is calculated changed?


Is there a way to make the new data comparable to the old data without re-downloading it? We have data going back several years.


Thank you for your help,