Problem with Trailing Stop getting filled / Execution

Hi guys

Has anyone ever has a problem with a trailing stop not getting filled with Tradestation? I'm currently using "Percent Trailing" in addition to another strategy -- and about 1/2 the time when the trailing stop (% trailing) is triggered, it doesn't get me out of the market. These are also supposed to be market orders, so there shouldn't be a problem with them not getting filled.

The reason I know this is because when I periodically check on my positions in the trade manager I'll still be either long/short and in the "Positions Match" column it'll say "False." But again, this doesn't happen every time. But often enough to be a problem.

Any suggestions would be greatly appreciated!

thanks - brandon