AFO and RRI via standard SAP Logon

Experts,

Currently we are migrating from BEx to AFO. In a Bex workbook you can have a report to report interface (RRI) where targets are maintained in BW in tx RSBBS. From the current BEx report you can jump to a transaction SAP ECC, using the SAP logon. In AFO the RRI starts a web interface, but we need it to start in the SAP Logon. How can we do this? In the AFO config file and tx RSBBS we did not find any parameters to enable this.

Thanks in advance!