as stated in the subject line, i am having issues with animation using active sections. If i have a building and set a section below and a section above I can animate it being "built up". I have successfully done this for 4 of 22 buildings within a model. However the other buildings, each being set up as their individual unique groups as the first 4, are having difficulties. If i am in the working in the groups view and set the bottom section as active, the building does not show (which is correct). But when go the the overall model view the building appears whereas the first 4 do not. any tips or suggestions?

Thanks-