well, ure exporting from .flt (1), and then u use the model u get from
Maya and Max (2), if the model is right in visualizad without problems
in maya and 3ds (ofc in .ob and .3ds) then ure not loosing anything
that should care to the away3d engine in the process, i have done some
exporting of that kind before, and the onle one that caused me trouble
was trying to export from sketchup to anything, but i could check the
mistakes in blender (yes i use blender :p) before even using away3d.
now, if u have a picture of the problem... (doesnt have to be the one
ure working with, only one that shows that) that will help a lot to
see what can may be causing this.