Upgraded the CA NFA from 9.3.6 to 10.0.7. Noticed the Flow Rate by Harvester dropped from 8,000 flow per minutes to few hundred.
Release : 10.0
Component : NQRPTA - REPORTERANALYZER
The cause in the scenario was the upgrade of the NFA Console was not successful.
Make sure the NFA Console upgrade is successful, review the NFA install logs. The last line exit code should be 0, check migrator.log.