Content-Ids not showing up in batch response - postman

Question

The Content-Ids I've setup in my odata batch request payload body are not showing up in the response payload body. Does anyone know what I am doing wrong or missing? I am using postman to test. I am not sure if that is a factor in this.
Sample Request:
--b2ef9c16-0c1f-47b4-942e-c5edd372bcc2
Content-Type: multipart/mixed;boundary=4df12e8f-048c-44f4-8003-1724637652e3
--4df12e8f-048c-44f4-8003-1724637652e3
Content-Type: application/http
Content-Transfer-Encoding:binary
Content-Id: 1
POST CreateChangeRequest HTTP/1.1
Accept:application/json;odata.metadata=full;IEEE754Compatible=true
Content-Type: application/json;IEEE754Compatible=true
{"Init":true}
--4df12e8f-048c-44f4-8003-1724637652e3
Content-Type: application/http
Content-Transfer-Encoding:binary
Content-Id: 2
POST CustomerOrderSet(OrderNo='Z10068')/OrderLinesArray HTTP/1.1
Accept:application/json;odata.metadata=full;IEEE754Compatible=true
Content-Type: application/json;IEEE754Compatible=true
X-IFS-Accept-Warnings: true
{}
--4df12e8f-048c-44f4-8003-1724637652e3
Content-Type: application/http
Content-Transfer-Encoding:binary
Content-Id: 3
POST CreateChangeRequest HTTP/1.1
Accept:application/json;odata.metadata=full;IEEE754Compatible=true
Content-Type: application/json;IEEE754Compatible=true
{"Init":false}
--4df12e8f-048c-44f4-8003-1724637652e3--
--b2ef9c16-0c1f-47b4-942e-c5edd372bcc2--
Sample Response:
--batch_8c97ad06-3e3d-4ac5-9921-7137bb31bdb1
Content-Type: application/http
Content-Transfer-Encoding: binary
HTTP/1.1 204 No Content
OData-Version: 4.0
Content-Length: 0
Content-Language: en-US
Content-Length: 0
--batch_8c97ad06-3e3d-4ac5-9921-7137bb31bdb1
Content-Type: application/http
Content-Transfer-Encoding: binary
HTTP/1.1 500 Internal Server Error
OData-Version: 4.0
Content-Type: application/json
Content-Length: 208
{}
--batch_8c97ad06-3e3d-4ac5-9921-7137bb31bdb1
Content-Type: application/http
Content-Transfer-Encoding: binary
HTTP/1.1 204 No Content
OData-Version: 4.0
Content-Length: 0
Content-Language: en-US
Content-Length: 0
--batch_8c97ad06-3e3d-4ac5-9921-7137bb31bdb1--
Thanks again for your help!