package popularity and jigdo

["Enrique Samson Jr." <xjigen@info.com.ph>]

I have read from the Jigdo documentation that a debian package can be 
pushed from one iso (eg. disc2) to another (eg. disc1 or disc3) as the 
release is upgraded depending on popularity.  If i ever update my 
woody-30r0 isos using the jigdo-lite script to r2, will I have the 
script read all my isos?  I am concerned with having to download an 
already existing package since my bandwidth is very limited.  Please 
advice, TIA.