No connectivity between the networks with Inter VPN import and export of route targets

ODL BORON SR2 with odl-netvirt-openstack and networking-odl
Openstack Newton installed via packstack and integrated with ODL

Import/Export of route target between two VPN instances are configured in a complementary manner

Prefixes from one VPN gets self-imported to another to both VRFs in odl-fib

Ping between VM on net10 and VM on net20 fails.
There is no router defined.
Testing if import/export between VPN instances allow connectivity between the networks without a router being associated to the networks or the VPN instances.

RD 1001:1 has

"export-RT": ["8800:1"],
"import-RT": ["4400:1","8800:1"],

RD 2002:1 has

"export-RT": ["4400:1"],
"import-RT": ["4400:1","8800:1"],

VMs:
Net10 : MAC: fa:16:3e:e4:4a:8f IP : 10.10.0.12
Net20 : MAC: fa:16:3e:34:97:38 IP : 20.20.0.3

dump flow is attached

/restconf/config/odl-fib:fibEntries/ is given below.VRF RD 222:1 is persisting in the FIB even after respective L3VPN is deleted.

{
"fibEntries": {
"vrfTables": [
{
"routeDistinguisher": "2222:1",
"vrfEntry": [

{ "destPrefix": "20.20.0.3/32", "label": 70034, "origin": "si" }

,

{ "destPrefix": "10.10.0.12/32", "label": 70027, "origin": "si" }

,

{ "destPrefix": "20.20.0.2/32", "label": 70033, "origin": "si" }

,

{ "destPrefix": "10.10.0.2/32", "label": 70035, "origin": "si" }

]
},
{
"routeDistinguisher": "1001:1",
"vrfEntry": [

{ "destPrefix": "20.20.0.3/32", "label": 70034, "origin": "l" }

,

{ "destPrefix": "10.10.0.12/32", "label": 70027, "origin": "si" }

,

{ "destPrefix": "20.20.0.2/32", "label": 70033, "origin": "l" }

,

{ "destPrefix": "10.10.0.2/32", "label": 70035, "origin": "si" }

]
},
{
"routeDistinguisher": "2002:1",
"vrfEntry": [

{ "destPrefix": "20.20.0.3/32", "label": 70034, "origin": "si" }

,

{ "destPrefix": "10.10.0.12/32", "label": 70027, "origin": "l" }

,

{ "destPrefix": "20.20.0.2/32", "label": 70033, "origin": "si" }

,

{ "destPrefix": "10.10.0.2/32", "label": 70035, "origin": "l" }

]
}
]
}
}