Appian Queries - Null Total Count

Certified Associate Developer

When I run a query (r18_3 so the total count parameter doesn't exist) with a!pagingInfo(1,-1), it returns total count appropriately. When I substitute a!pagingInfo(1,10), the total count is 0. Does anyone know why this occurs? Looking at the view, the identifiers are sometimes null. Would this affect how the system gets total count? 

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