Diagnosis:

By default, the configuration for data transfers from FNMS to ServiceNow limits the number of records of each data type to be included in the transfer.  For applications export, this number is 10,000,000.

The following Online Help article lists the default configured limit for data transfers between FNMS and ServiceNow

https://docs.flexera.com/FlexNetManagerSuite2020R2/EN/InvAdapConn/index.html#adapters/ServiceNow/tasks/SNI-ConfigureFNMSExport.html

To check whether you are running into this limit, the following query can be run against the FNMSCompliance database to get an estimate number of records to be exported:

SELECT count(*)
FROM( SELECT 
SoftwareTitleID, ComplianceComputerID, ComplianceHistoryTypeID, HistoryDate, 
ROW_NUMBER() OVER (PARTITION BY ComplianceComputerID, SoftwareTitleID ORDER BY 
HistoryDate DESC) AS RowRank
FROM ComplianceHistory
WHERE ComplianceComputerID IS NOT NULL
AND SoftwareTitleID IS NOT NULL
AND ComplianceHistoryTypeID IN (4, 5)
) AS hist
WHERE hist.RowRank = 1