Wrong numbers between reports

One of my co-workers is testing the tool from the past month and she saw that 2 reports in the tools show different number in the overall results…

More specific for example: The Visitors Overview from May is telling us that we only have 493 unique visitors… (attached screen)

but if we get the “range” report from May 1 to 31 (visitors per day) and from there we sum the extraction the number is 1185… (Attached may)

there is a difference, and only on the unique visitors number, the rest calculation are correct from the extract to the overview in the page…

also I already activate the enable_processing_unique_visitors_range = 1 in the config file and re run all the archived reports…

Is this a known bug? I search it but couldn’t find anything about it…

some one else is having the same issue?

it should work, it looks like maybe the setting didn’t work for you.

Did you add
enable_processing_unique_visitors_range = 1

below [General] section ?

to make sure they are re-processed, delete the piwik_archive_ tables and try again ?