Mochamanz:
I put the old Z2, Z2Pro/zfx, UPP, AIO and Z2Pro/no zfx on the hood of one of my own cars a few days ago.
I too noticed some dust attraction, mainly on the UPP and Z2 Pro/no zfx but also to some extent on the Z2 Pro/zfx.
I really do not know for a fact what causes the dust attraction, but I suspect that it may be related to the build up of static while detailing or dust attraction before the sealants fully crosslink and cure.
What I do know is that dust attraction problems normally go away with the first wash. If you have not already done so, wait for 24 hours for the Z2 Pro to fully crosslink and then give it a light wash, this may take care of the problem for you.
I wish I could help more, but I'm still experimenting with Z2 pro myself. Good luck!