Hi Shylaja,
Please have a look at:
- SAP Note 923176 - Support situation authorization management BI70/NW2004s (in particular topic Migration);
- SAP Note 1125108 - You are using the obsolete 3.x authorizations in BW 7.0;
- FAQ - Running the Enterprise Data Warehousing - NetWeaver 2004s BI Analysis Authorizations;
- SAP Help.
There are also many SCN Discussions around this topic. Please search on "migration analysis authorizations".
Best regards,
Sander