about the differences from kylin 1.6 and 2.6

[??????]

HI all,


I am upgrading my kylin from 1.6 to 2.6,


there is a cube, its size in 1.6 is about 300MB, but only 100MB in 2.6, 
however, its configurations and data counts are the same,


so, I`m not sure if there`s something wrong in my cube, or its just the new 
features in higher version?


Any suggestion is welcome, 


thanks very much!