SAP Enterprise Portal 7.5 with SAP BW 7.31 and BOBJ 4.1 SP2

Dear All,

We are planning to upgrade SAP Portal 7.31 to 7.5 latest release. We have been using BEx reports, Workbooks and Dashboards implemented using Netviewer and Dashboard Designer tools. Can BW and BOBJ stuff work with SAP Portal 7.5 release? Do we need to upgrade them as well?

SAP BW 7.31

SAP BOBJ 4.1 SP2

SAP Portal 7.31