tradingest,

the question probably comes down to:

Did you test in Multicharts using Tradestation data or did you test in Tradestation?

The next question would be what you tested exactly futures, stocks or Forex, as with the latter you might want to stick to the broker that you used the data for testing for, too.

You can use Multicharts symbol mapping and use TS data for charting and trade via one of the execution methods Optimus provides, via IB or any other supported broker. Provided that you properly configured the symbol mapping and are not trying to trade different symbols or instruments (i.e. chart a stock and try to trade a future as MC symbol mapping might not work with such a configuration).

Regards,

ABCTG