Custom-DataProvider-and-GetHistory

When I call the GetHistory method of the DataProviderBase and pass the option to filter out the pre-post market data, the data is not actually filtered when using my own custom DataProvider.

In my data provider, I've implemented the method GetHistoryInternal. As far as I can tell, the options which are passed to DataProviderbase.GetHistory method are not passed along to the GetHistoryInternal method. So I cannot tell whether or not the pre-post market data should be filtered or not. So I do not filter it.

Normally, this works fine for the bars that are passed to a strategy's Execute method: WL filters out the pre-post market data for me. But when I use GetHistory this is not the case.

Is this correct, am I missing something, or should WL also filter out the pre-post data for me when using GetHistory?

Below is the code I use to call GetHistory.
Using WL8 build 89.

Thanks.

CODE:
        
public static BarHistory GetHistory(this BarHistory bars, HistoryScale scale, int priorDays, bool? filterPrePost = null) {
   DataRequestOptions options = null;
   if (filterPrePost.HasValue) {
      options = new DataRequestOptions {
         FilterPrePost = filterPrePost.Value
      };
   }

   var dp = bars.GetDataProvider();
   var history = dp.GetHistory(bars.Symbol, scale, bars.StartDate.AddDays(-priorDays), bars.EndDate, int.MaxValue, options);

   return history;
}