Just to make one thing a bit clearer regarding backwards compatability.

You can view a neutral-format WF3 part in WF2. Subsequently, any changes made to the WF3 part can be updated in the WF2 version using the ATB menu under FILE.

You will not have a feature list, but this may be enough for you (or not).

SOMETIMES, making a UDF with all features but the base datums can get you into WF2.

Rui