BI Upgradation from 3.0b

Hi All,

We are going to upgrade from 3.0b to BI 7. If we do so the customized cubes and ods also will come to BI 7 or we have to creat the same in BI 7?? since we have lot of customized objects.

I am go throughing some docs. But I am not clear abt the same.

Pls let me know

Thanks

Esther