Position-Metrics-not-copied-to-Clipboard

This is WL8. In a C# coded strategy I go:

CODE:
Transaction t = PlaceTrade(bars, TransactionType.Buy, OrderType.Market, price: 0.0,            signalName);            
t.SetPositionMetric("PR3", profit3);
t.SetPositionMetric("PR6", profit6);
t.SetPositionMetric("PR12", profit12);

This adds a few columns to Backtest Results -> Positions:

Fine.

Now I go Right Mouse->Copy To Clipboard and paste the Clipboard to Excel.

My valuable new and carefully calculated columns "PR3, PR76 and PR12 are missing in the Excel sheet (!)

I guess the Copy To Clipboard code does not know about Position Metrics :(

I also tried to paste the clipboard to a text editor: Same :(