Dear Experts,
I hope this is not too twisted. In fact it is not as twisted as the title suggests (I believe).
I have an extension attribute that is a date. For many nodes the entry for that EA is empty. Is there a way to use that as a criterion for smart group membership? The reports with an empty 'value_on_client' field have '0' in the 'date_value_epoch' field, which corresponds to 1970 01 01 01:00:00. So I would expect that a criterion like before '2000-01-01' should catch all these. Unfortunately it does not, I expect that jamf does a special treatment for the empty date field.
Did anybody succeed in finding a criterion to select empty date fields?
Thanks in advance for your help,
Matthias