Measure Limitations or Capped Captured data

[Jim]

Are measures limited on how much data they can bring back from captured data fields? 

 

Why do I ask? 

 

I am querying our first time fix percentage in a measure, based on the following criteria 

h_fk_serviceid in ('1','27')
and h_requesttype = 'Incident'
AND h_status IN ('status.closed', 'status.resolved')

SUBQUERY h_firsttimefix!='NULL'

The percentage is accurate, the Measure row count is accurate at 1387, the count for the sub query is 665, When I run a report based on the measure entity it only returns 479 results. So I have had to build a report separate to the measure querying the exact same thing to be able to see the values for the measure