Hi Ivan
Still you can try the same options in 7.20 as mention in the SAP Note. but the note pointing to 7.00.
Refer the SAP Note for BWA statistics to find a BW query name and SCN BWA Best Practices
1756353 - How to use BWA statistics to find a BW query name
BWA Best Practices, How to, Troubleshooting Notes
BR
SS