Reported in the forums
Column names in Piwik Export Files (TSV Excel) is not correct.
Steps to reproduce:
1.) Goto Visitors > Overview
2.) Select "month" in period selection (IMPORTANT)
3.) Click on save icon and select TSV Excel and download report
The report will show more Unique outlinks than outlinks. It also shows more Unique Pageviews than Downloads which is very uncommon. [Of course there are a lot of 0 in columns because piwik got new metrics in 1.7]
(In ) Fixes #3055, fixed bug with CSV Renderer where column order was not kept constant when rendering DataTable_Arrays. Also modified OneVisitorTwoVisits test by adding more outlink actions and one CSV test.
(In ) Refs #3055 small refactor - thanks capedfuzz for your patch!