Hi Tracy,
Yes, this is a common design pattern. I call it "aggregation". Anyway, use two forms and the Import functionality in the second. Issue Tracking and Meeting Agenda are two out-of-box samples that show off import functionality. The SDK has more info. It requires some work to set up the import xsl and it is hard to debug, but it works.
Patrick Halstead [InfoPath MVP]
InfoPathDev
Patrick Halstead
Project Manager at Qdabra