You may try to edit the watchlist file directly. If you have added any item in watchlist then you can go to "%appdata%\Lunetek Software\Stockalyze" folder and edit watchlists.xml file directly. Make sure you have Stockalyze closed and ensure that data is not incorrect and be cautious about that.
I will not recommend this approach unless you wan to do it. :) Nothing wrong will happen, but you should take backup of watchlists.xml if you want to revert back to original in case of any mistake.
I will not recommend this approach unless you wan to do it. :) Nothing wrong will happen, but you should take backup of watchlists.xml if you want to revert back to original in case of any mistake.