ClOrdID Do not match in request(35=D) and response (35=8)

I am sending  NewOrderSingle  Request (35=D) and in response I am getting ExecutionReport (35=8) for some other order which is filled and later closed.

Here are  the message details:
The order (ClOrdID = 815338978 ) was filled and closed as can be seen from the received message 39=2 and 150=F in response to OrderStatusRequest (35=H). Here both, request and response has same ClOrdID = 815338978 .
However, following this orderStatuRequest I sent Stop Order NewOrderSingle message with New ClOrdID = 2092754372. But, in response I got the message for ClOrdId = 815338978 which is earlier Filled order. 
Not sure why this is happening. Is this valid response? If someone could comment on this I would greatly appreciate it.

-----------Messages----------
--------Order Status Request message and response----------
26/10/2018 16:57:54.686 | SendText : 8=FIX.4.4 9=101 35=H 49=icmarkets.2015366 56=cServer 57=TRADE 50=TRADE 34=491 52=20181026-16:57:54 11=815338978 54=1 10=128 
26/10/2018 16:57:54.686 | ReceivedText : 8=FIX.4.4 9=223 35=8 34=492 49=cServer 50=TRADE 52=20181026-16:57:54.403 56=icmarkets.2015366 57=TRADE 6=1.13958 11=815338978 14=1000 37=14934812 38=1000 39=2 40=3 54=1 55=1 59=1 60=20181026-16:57:54.155 99=1.13957 150=F 151=0 721=7056922 10=241 
---------NewOrderSingle request and response-----------
26/10/2018 16:57:55.372 | SendText : 8=FIX.4.4 9=157 35=D 49=icmarkets.2015366 56=cServer 57=TRADE 50=TRADE 34=492 52=20181026-16:57:55 11=2092754372 55=1 54=1 60=20181026-16:57:55 38=1000 40=3 99=1.13975 59=3 10=211 
26/10/2018 16:57:55.372 | ReceivedText : 8=FIX.4.4 9=223 35=8 34=493 49=cServer 50=TRADE 52=20181026-16:57:54.623 56=icmarkets.2015366 57=TRADE 6=1.13958 11=815338978 14=1000 37=14934812 38=1000 39=2 40=3 54=1 55=1 59=1 60=20181026-16:57:54.155 99=1.13957 150=F 151=0 721=7056922 10=246 
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