The 'Simplify' keys option doesn't appear to work correctly
- to export all channels with keys.
- keep keys that are the same value (flat curves).
- not add keys to channels that don't have keys.
With 'simplify' set to 0.01 up to 1 - all keys that have a flat curve are removed, even rotations that are not 0,0,0.
With 'simplify' set to 0 (disabled) - all animate-able channels are keyed, even if there are no curves/keys on them.
This means there is no way to export with keys on only the channels I animated.
Should this be fixed???
Simplify shouldn't remove curves that are flat (especially if the values are not default) - or it should be a check box.
Disabling 'simplify' shouldn't add keys to un-keyed channels - we have 'Force Start/End keying' for that.
I can get what I want by ensuring all bones with currently flat curves have some small tweak to make them not flat. Bit of a PITA as you might expect.
If these can't be fixed or aren't considered bugs then we don't have full control over animation exported from Blender in FBX files :(