Master data during Upgrade

In Upgrade project (4.7 to Ecc 6.0 ) how master data get transfer in case of any module?

a. There is no need to transfer data using tools(like LSMW,Bdc etc) , data will be transferd during technical upgrade only

OR

b. We have to upload master data using tools.

Thanks and regards in Advance

Pankaj Mohite