Automatic retest error when we use new data range

I usually use the automatic retest task to make another testing for a large number of robust strategies. These strategies are all fixed one contract strategies, but based on different data ranges. Because many commodities have very different historical data ranges.
      Every once in a while, when new sample data comes in, I need to test it again and again. Sometimes I need to add some different money management methods and test them again and again.
      1. bug: Once i need to reselect the data range instead of the full sample data for the test, it did not work. For example, most commodities have 10 years of historical data, but two commodities have only two or three years of historical data. In some cases, I only need to test two or three years of historical data on all strategies.
               So I recommend that :
         option1:when the user does not intentionally modify the date range in data setting, The time range of the retest should be based on the time range of the original strategy config(data range in last test ).
         option2: user modify the start day, end day.  we can test full sample data or  a specific time range.
      
2. As you can see, "retest only selected" option is missing in automati retest task, This is a very useful and convenient feature, it is in Retester