Hello johngloid,

The FBX plug-in reads the timeline as a whole piece and will export everything from the first key to the last regardless of the in/out frames you indicate.  It is not meant to be a tool used to export animation takes, or pieces of the timeline.

The best workaround if you do want to use the plug-in, would be to bake the section of the timeline you want to have as a take, then cut the first and last keys.

As an example, let’s say I have a cube, and this cube is at (12, 0, -12) at frame 1, then at frame 24, it’s at (-12, 0, 12).  If I wanted a take consisting of frames 6 to 14, I would go to the FBX options and set Bake Animation to on, then set my Start and End to 6 and 14, and set Resample All to on as well.

If I then import this cube into a new maya scene, I would see the following, 1 key at frame 1, keys on every frame from 6 to 14, then a last key on frame 24.  I could then go in and trim the keys at frame 1 and 24 so that I would be left with only the keys that I want.

Like I mentioned above, the FBX plug-in is meant to be a tool used to transfer whole data from one application to the other, it is not meant to be an editor that exports data in pieces.  Hope this helps.

Regards,
Carlos