CS3 SWF's in MX SWF

I have a site that is comprised of a main SWF that holds navigation and framework for the website and then a bunch of external SWF files for each page in the website. All of these files were created in MX. I would like to redo some of these pages in CS3 using AS 3.0…if I make new pages and export them from CS3 with AS 3.0, will there be any compatibility issue when loading these SWF’s into my main MX SWF? Basically can I load new SWF material into old SWF’s? Thanks.