saving down to flash 8 from cs4

I am creating training modules with a template that was made in as2, and with flash 8.

with cs3 I had no trouble saving as flash 8 and publishing files so they run using the scripts created.

I have cs4 on my new laptop and just hit a roadblock -I think.

While cs4 lets you start a new as2 project it lets you save down to cs3 only.

I can open the template files, edit and work with them.

Will I run into trouble when I publish them now that I am in cs4? any hints or ideas. Or do I need to downgrade just for this project?