odata - DataServiceContext don't read related entities into the entity object -

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i'm making call odata v3 webapi, expanding related entities follow:

var cenarioinvestimentoescolhido = container.cenariodeinvestimentoescolha.expand("cenariodeinvestimentocenario,cenariodeinvestimentocenario/cenario,cenariodeinvestimentocenario/aeronave").where(c => c.cenariodeinvestimentocenario.cenariodeinvestimento.aerodromo.codigoicao.equals(idaerodromo)).singleordefault();

this absolute uri generated expression:

https://localhost/sac/webapi/odatawebapi/cenariodeinvestimentoescolha()?$filter=cenariodeinvestimentocenario/cenariodeinvestimento/aerodromo/codigoicao%20eq%20'snbr'&$top=2&$expand=cenariodeinvestimentocenario,cenariodeinvestimentocenario/cenario,cenariodeinvestimentocenario/aeronave

and result set responded api:

{     "odata.metadata":"https://localhost/sac/webapi/odatawebapi/$metadata#cenariodeinvestimentoescolha","value":[       {           "cenariodeinvestimentocenario":{               "aeronave":{                   "id":4,"codigo":"b738","nome":"737-800","idfabricante":3,"pmd":"80-90%","categoria":"4c"               },"cenario":{                   "id":3,"nome":"cen\u00e1rio 3"               },"idaerodromo":112,"idcenario":3,"idaeronave":4,"categoriadeaeronave":"4c","subtotal":"39587651.01","eventualacrescimo":"3958765.10","total":"43546416.11"           },"idaerodromo":112,"idcenario":3,"datainformadobancobrasil":"2014-03-11t00:00:00","numerooficio":"46/2014/seap/sac-pr","dataescolhasalamonitoramento":"2014-03-17t00:00:00","dataescolhasacpr":"2014-03-18t00:00:00"       }     ] }

as can see, there entity named cenariodeinvestimentocenario related entities aeronave , cenario. howevar, both child entites null after call, if they're not deserializated.

i checked response stream in receivingresponse event , indeed related information has been received. why properties null? serialization issue?

do have attribute above controller action ?

[enablequery(maxexpansiondepth = x)]

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