Hold actions during the night, but keep monitoring for reporting

My goal is to monitor and register full time, 24*7, for use of reporting, but do not want notifications (mail actions) during nightly hours.
I have configured downtimes on my adminserver (not the managed servers with the monitors) , selecting all monitor groups available, but they do not seem to work.
Mail notifications (also configured on the adminserver) keep coming, and i am uncertain of downtimes affecting reports.
I have read in old forum answers that monitoring is disabled during downtime schedule hours. I do not want that, i still need the information for reporting.
Does anyone know how to achieve my original goal?

Kind Regards,

Eric