Quote from PuffyGums:
How does that happen? If I cancel an order, my cancellation gets its confirmation, does it not? If IB gets a late notice, then I have a cancellation without a confirmation which should be revealed by TWS not removing the order line that I attempted to cancel and should be traceable in a properly desgined order audit trail/ log/execution report.
This has been my experience with IB:
1. If you try to cancel an order and you see its color status go red, then it is cancelled.
2. If you try to cancel an order and at some point it disappears from the Pending page, then it has been cancelled.
3. If you try to cancel an order and you see its color status go magenta, then it is not cancelled and something is screwed up - call IB about it, or talk to them on chat.
4. If you try to cancel a DAY order and you see its color status go magenta and you forget about it for the day, then:
a) This order won't show up on your Pending page the next day even though its status is unknown.
b) You could receive confirmation of a fill on that order several days later (a few years ago this happened to me several times - I'd get a fill on settlement date).
Always double check the Pending page before you log out for the day. If there are any pending cancels, clear it with IB otherwise you could be in for a surprise.