Missing "Current RIC" Column in Intraday Summaries Response

Hi,

I'm migrating from TRTHv1 to TRTHv2 and am struggling to display the "Current RIC" column we get in TRTHv1 responses. I have included "DisplaySourceRIC":true in the Condition of my request, which is what the docs suggest, but I still don't see the "Current RIC" column.

The only columns I receive in addition to the ContentFieldNames requested are:

#RIC,Domain,Date-Time,GMT Offset,Type

Is this because the RIC I'm requesting hasn't changed since the query dates I'm entering? Am I missing something in my query?

My query, for reference:

{"ExtractionRequest":{"@odata.type":"#ThomsonReuters.Dss.Api.Extractions.ExtractionRequests.TickHistoryIntradaySummariesExtractionRequest","ContentFieldNames":["Open","High","Low","Last","Volume","No. Trades","Open Bid","High Bid","Low Bid","Close Bid","No. Bids","Open Ask","High Ask","Low Ask","Close Ask","No. Asks"],"IdentifierList":{"@odata.type":"#ThomsonReuters.Dss.Api.Extractions.ExtractionRequests.InstrumentIdentifierList","InstrumentIdentifiers":[{"Identifier":"IBM.N","IdentifierType":"Ric"}],"ValidationOptions":null,"UseUserPreferencesForValidationOptions":false},"Condition":{"MessageTimeStampIn":"GmtUtc","ReportDateRangeType":"Range","QueryStartDate":"2008-08-20T00:00:00.000Z","QueryEndDate":"2008-09-30T00:00:00.000Z","SummaryInterval":"OneMinute","TimebarPersistence":true,"DisplaySourceRIC":true}}}

Thanks!