asp.net - OData DataServiceQuery deserialize only first element of collection -

on asp.net mvc5 application, have service reference odata api. i'm making call api, expanding child propertie, follows:

dataservicequery<cenariodeinvestimentocenario> querycenario; querycenario = context.cenariodeinvestimentocenario     .expand("cenariodeinvestimentocenarioitem")     .where(a => a.idaerodromo.equals(55)) dataservicequery<cenariodeinvestimentocenario>; queryoperationresponse<cenariodeinvestimentocenario> response = querycenario     .includetotalcount()     .execute() queryoperationresponse<cenariodeinvestimentocenario>; 

this generates following query string:

localhost/myapi/cenariodeinvestimentocenario()?$filter=idaerodromo eq 55&$expand=cenariodeinvestimentocenarioitem 

using query string browser, can correct result set of data follows on image bellow. notice cenariodeinvestimentocenarioitem collection:

however, inside asp.net application, on queryoperationresponse response object, first cenariodeinvestimentocenarioitem collection element, shown on pic below:

i have no idea why happening. i'm pretty new working odata , service reference, have no idea happening. can help-me please?

tx!