Hello
So what I ended up doing was the following:
I kept the first 10 frames for the preloader where I created
a preloader with all code on the timeline (ended up being a lot of
redundant code but not the end of the world....) Then I exported
all external classes on frame 11 (under publish settings >
settings > Export Frame for classes) and the main app starts on
frame 12.
Seems to be working so far on my local setup since there's
only one swf file.
Thanks for your time,
Best,
stephank