I know this thread is old, but I'll add one more very important thing, as I lost money this morning because every time I tried to partial or cover/sell with my demo account, the next order was executed through my live account (even though the trading account still appeared in my montage). We finally figured out that it was because my live account number was included in some of my hot key scripts. Check and see if that is the case. If so, take out the ACCOUNT=U#### command. If you have hot buttons, make sure you change the script there, too, as it does not automatically carry over the scripts entered in the hot keys.