Scheduled message delivery and duplicate message detection

Hi,

I want to know how Service Bus 1.1 for Windows Server deal with the following situation:

• I want to detect duplicate messages on a queue, so I set the option on the queue
• I first send a message to the queue with a ScheduledEnqueueTimeUtc: the message will appear in the queue in a couple of minutes after
• Before this message is enqueued, I send a message with the same id to the same queue.
• Which message will be detected as the duplicate? The first one or the one that is scheduled? I hope this will be the one scheduled.

Thanks.