Release : 10.x
Component : CA APP SYNTHETIC MONITOR (WATCHMOUSE)
Upon clicking on the report, no data showed up for the monitors. After creating a test report, that report showed data from the same monitors.
After seeing this, by clicking on the existing report that wasn't showing data, as per the image above, I clicked on "Save", even though no changes were made and then clicked on "Done".
Once this was done, by clicking on that same report again, the data showed up.