Hi,
Have you tried setting the attribute allow_early_termination to true in the annotation node of your flat file schema? If you can’t do it in Visual Studio, you’ll have to use a text editor to change that setting.
See this blog for more information (even though it was written for version 2004, but I think it’s still applicable to 2009):
http://blogs.msdn.com/b/skaufman/archive/2004/05/07/127899.aspx
Daniel.