Time and Sales Erased on Symbol Switch

If you change the target of the T&S from STOCK1 to STOCK2 and then back to STOCK1, the T&S data for STOCK1 is not restored.

In my case as i link my watch list against many different panels, when i switch between stocks the time and sales data is lost on each change.

This means I cannot quickly check on another stock, then go back to the one im really watching / actively looking at and know what the last sale price was or if a sale has occurred during my switch as the T&S data is gone.