Flow statistics in RESTCONF Operational space not deleted after deleting a flow on OF13 switch, Missing Flow statistics in RESTCONF Operational space after adding a flow on OF10 switch

We configure this:

PUT http://127.0.0.1:8080/restconf/config/opendaylight-inventory:nodes/node/openflow:1/table/2/flow/139

<flow xmlns="urn:opendaylight:flow:inventory">
<priority>2</priority>
<flow-name>Foo</flow-name>
<match>
<ethernet-match>
<ethernet-type>
<type>2048</type>
</ethernet-type>
</ethernet-match>
<ipv4-destination>10.0.10.1/32</ipv4-destination>
</match>
<id>139</id>
<table_id>2</table_id>
<instructions>
<instruction>
<order>0</order>
<apply-actions>
<action>
<order>0</order>
<dec-nw-ttl/>
</action>
</apply-actions>
</instruction>
</instructions>
</flow>

In the operational we do not see the flow:

GET http://127.0.0.1:8080/restconf/operational/opendaylight-inventory:nodes/node/openflow:1/table/2

{
"flow-node-inventory:table": [
{
"opendaylight-flow-statistics:aggregate-flow-statistics":

{ "opendaylight-flow-statistics:byte-count": 0, "opendaylight-flow-statistics:packet-count": 0, "opendaylight-flow-statistics:flow-count": 0 }

,
"flow-node-inventory:id": 2,
"opendaylight-flow-table-statistics:flow-table-statistics":

{ "opendaylight-flow-table-statistics:active-flows": 0, "opendaylight-flow-table-statistics:packets-looked-up": 0, "opendaylight-flow-table-statistics:packets-matched": 0 }

}
]
}

However in the switch, we see a flow with actions=drop:

odluser@odl-system-test:~/integration\> sudo ovs-ofctl -O OpenFlow10 dump-flows s1
NXST_FLOW reply (xid=0x4):
cookie=0x0, duration=7.633s, table=0, n_packets=0, n_bytes=0, idle_timeout=300, hard_timeout=600, idle_age=7, priority=2,ip,nw_dst=10.0.10.1 actions=drop