Hi Mahesh ,
This may be because of changes happened in BI 4.1 calculation engine.
consider formula rewriting tool for BI 4.1 SP3
http://wiki.scn.sap.com/wiki/display/BOBJ/BI+4.1+SP03+WebI+Calculation+Rewrite+Tool+-+WHERE+Operator
Hi Mahesh ,
This may be because of changes happened in BI 4.1 calculation engine.
consider formula rewriting tool for BI 4.1 SP3
http://wiki.scn.sap.com/wiki/display/BOBJ/BI+4.1+SP03+WebI+Calculation+Rewrite+Tool+-+WHERE+Operator