At the moment when you create a report in the marketing activities field, it takes a snapshot of the current stats - eg Email Performance and Email Link Performance.
You need to delete the report and re-create it to get a updated report.
Any chance this can be upgraded to update when you click on the report itself?
Instead of deleting the report, you should be able to click the little blue and white "Refresh" button on the bottom left corner to get the updated data. That option is also available under the Report Actions menu. But I agree, it would be nice to get an updated report right when you click on it.
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