$ref does not work if $id is not first property (even if readahead is set)

[jogibear9988]

Source/destination types

        public static Newtonsoft.Json.JsonSerializerSettings JsonNetDefaultSettings = new Newtonsoft.Json.JsonSerializerSettings()
        {
            TypeNameHandling = Newtonsoft.Json.TypeNameHandling.Auto,
            MetadataPropertyHandling = MetadataPropertyHandling.ReadAhead
            PreserveReferencesHandling = PreserveReferencesHandling.Objects,
            Converters = new List<JsonConverter>() {new IpAddressConverter()}
        };

Source/destination JSON

{
   "$id":"1",
   "$type":"MCC.ActionSystem.ActionTasks.Common.Flow.Decision.DecisionActionTaskDTO, MCC.ActionSystem",
   "Condition":{
      "Value1":{
         "ValueType":"Property",
         "Value":null,
         "$id":"3"
      },
      "Value2":{
         "ValueType":"Const",
         "Value":null,
         "$id":"4"
      },
      "ComparisonMode":"IsNull",
      "IsNegated":false,
      "$id":"2"
   },
   "TrueActionTask":{
      "$type":"MCC.ActionSystem.ActionTasks.Common.ChangeField.ChangeFieldActionTaskDTO, MCC.ActionSystem",
      "Field":{
         "ValueType":"Property",
         "Value":null,
         "$id":"6"
      },
      "Value":{
         "ValueType":"Const",
         "Value":null,
         "$id":"7"
      },
      "ChangeFieldType":0,
      "ApplyChangesImmediately":false,
      "AutomaticlyCreateInstancesOfParentObjects":false,
      "ConvertSourceValueToTargetType":false,
      "NextActionTask":{
         "$type":"MCC.ActionSystem.ActionTasks.Common.Information.Description.DescriptionActionTaskDTO, MCC.ActionSystem",
         "Message":{
            "ValueType":"Const",
            "Value":null,
            "$id":"9"
         },
         "NextActionTask":null,
         "ConfiguratorPosition":{
            "X":115,
            "Y":385,
            "Width":200,
            "Height":100,
            "Z":0,
            "Layer":0,
            "$id":"10"
         },
         "Comment":null,
         "Id":"6b2295ae-e5a2-4080-81d0-077bd9ee39ed",
         "$id":"8"
      },
      "ConfiguratorPosition":{
         "X":580,
         "Y":365,
         "Width":200,
         "Height":100,
         "Z":0,
         "Layer":0,
         "$id":"11"
      },
      "Comment":null,
      "Id":"53397d02-cb40-46c1-affd-167d39a4921a",
      "$id":"5"
   },
   "FalseActionTask":{
      "$type":"MCC.MFCV2.Services.TransportService2Interfaces.Actions.ChangeResourceTypeActionTaskDTO, MCC.MFCV2.Services.TransportService2Interfaces",
      "Value":{
         "ValueType":"Const",
         "Value":null,
         "$id":"13"
      },
      "NextActionTask":{
         "$ref":"5"
      },
      "ConfiguratorPosition":{
         "X":657,
         "Y":103,
         "Width":200,
         "Height":100,
         "Z":0,
         "Layer":0,
         "$id":"14"
      },
      "Comment":null,
      "Id":"456de253-0900-489c-a565-e1fd437506e1",
      "$id":"12"
   },
   "ConfiguratorPosition":{
      "X":182,
      "Y":174,
      "Width":200,
      "Height":100,
      "Z":0,
      "Layer":0,
      "$id":"15"
   },
   "Comment":null,
   "Id":"d20bc27f-cd27-4623-83ad-fc489e67dcc8"
}

Expected behavior

References should work

Actual behavior

References do not work

[jogibear9988]

If I move the "$id" to the beginning, it works

[BramVader]

Never too late to respond to an old issue... MetadataPropertyHandling.ReadAhead only applies to the order of properties within an object, not to the order of objects within the document. Meaning that your $id, $ref, etc. must come first in an object unless MetadataPropertyHandling.ReadAhead is set. As far as I know, it's not possible to have $id further in the document than the matching $ref.