Each NetFlow v9 packet includes the template for the data records. Never seen that before. Furthermore it looks like flowStartMilliseconds (152) and flowEndMilliseconds (153) is used for indicating the start / end of the flow. I'm pretty sure we use FIRST_SWITCHED (22) and LAST_SWITCHED (21) for this. Also each flow seems to have a duration of zero which is also strange.

Configuration of the Cisco Router...

low exporter OpenNMS
destination 10.63.138.140
source TenGigabitEthernet1/0/6
transport udp 9999

flow monitor Netflow-Monitor-In
exporter Netflow-to-Orion
exporter OpenNMS
cache timeout inactive 10
cache timeout active 60
record Netflow-In
!
!
flow monitor Netflow-Monitor-Out
exporter Netflow-to-Orion
exporter OpenNMS
cache timeout inactive 10
cache timeout active 60
record Netflow-Out

for router..

Cisco IOS Software [Everest], Catalyst L3 Switch Software (CAT3K_CAA-UNIVERSALK9-M), Version 16.6.6, RELEASE SOFTWARE (fc1)..Technical Support: http://www.cisco.com/techsupport..Copyright (c) 1986-2019 by Cisco Systems, Inc...Compiled Thu 11-Apr-19 02:24