Hi Drew,
The expectation is that the text would flow from one frame to the next and keep its formatting, kind of like wrapping around a picture. In order to accomplish what you need, you'll need to measure the text, adding content until it no longer fits in a frame, and then put that in as 2 paragraphs, one left aligned and one right aligned.
If you're willing to send the job to FusionProSupport@marcom.com we can take a look at it.