No problem mate, I must say that this problem had me quite confused and frustrated to the point where I started removing the named selections one by one from the model lods. As soon as I removed the "velka vrtule blur" selection the shadows appeared. I noticed that in the sample BIS models they used a proxy for the "zashleh" muzzle flash so I did that with the "blur" rotor selections. Made the "velka vrtule blur" and "mala vrtule blur" each in a seperate .p3d then incorporated them onto the model each with a proxy, applied the named selections to each proxy eg "velka vrtule and velka vrtule blur" or "mala vrtule and mala vrtule blur". Now the rotor animations work perfectly ingame and the helicopters have the shadows cast on themselves.
I think I should write up another mini-tutorial on this subject