Breaking up long Framemaker Chapters into separate topics in Robohelp.

I have just gone through a Robohelp class. Main purpose is to make an HTML online version of my Framemaker book. Upon import from Framemaker to Robohelp, I designated my Framemaker Heading 3 into a Robohelp Heading 2. My understanding from my class was that this would break out the level 3 topics so that they would get their own online help page.

However, the structure of the original Framemaker book was retained upon import with each topic starting with Heading 1 and containing Heading 2, 3 and 4s. Original Framemaker book chapters started with a Heading 1 and contained Headings 2, 3, and 4.  Is there a way to break out the Heading 2 and 3 from the Heading 1 chapters so that the online help pages aren't so long?

Edit: I found a similar discussion thread which states to use the Pagination option upon import. Well, now that I have already imported my Framemaker document, is there an easy way to chunk up the Framemaker chapters in Robohelp?

Thanks and sorry for the double posting.