[Dual-ToR Active-Active][202405] "show flowcnt-route stats" returns empty line after 'config reload'

[ayurkiv-nvda]

Description

flowcnt-route entry wasn't preserved after 'config reload'
Reproduced only on Dual-Tor setup on 202405.704663-29cbc5423
Not Reproduced on t0-64 setup on 202405
Not reproduced on Dual-ToR setup on 202311.700331-57677f3da

Steps to reproduce the issue:

Manual:

1. configure neighbors
2. sonic-db-cli CONFIG_DB hmset 'STATIC_ROUTE|2.2.2.0/24' nexthop 192.168.0.2,192.168.0.6,192.168.0.22
3. counterpoll flowcnt-route interval 1000
4. counterpoll flowcnt-route enable
5. sudo config flowcnt-route pattern add 2.2.2.0/24 --max 30
6. make sure that flowcnt-route entry is created:
   show flowcnt-route stats

  Route pattern      VRF    Matched routes    Packets    Bytes
---------------  -------  ----------------  ---------  -------
     2.2.2.0/24  default        2.2.2.0/24          0        0

7. config save -y
8. config reload -y
9. wait until all dockers UP and RUNNING, all bgp session established

Automatic:

1. run test route/test_static_route.py::test_static_route_ecmp
   AssertionError: config static route: 2.2.2.0/24 nexthop 192.168.0.18,192.168.0.8,192.168.0.2 <--- received during test run

Describe the results you received:

go to SONIC and check:
show flowcnt-route stats

Route pattern      VRF    Matched routes    Packets    Bytes
---------------  -------  ----------------  ---------  -------

<--- Empty

Describe the results you expected:

show flowcnt-route stats

  Route pattern      VRF    Matched routes    Packets    Bytes
---------------  -------  ----------------  ---------  -------
     3.2.2.0/24  default        2.2.2.0/24          0        0

Output of show version:

202405.704663-29cbc5423

Output of show techsupport:

(paste your output here or download and attach the file here )

Additional information you deem important (e.g. issue happens only occasionally):