Where used Bex Query

Hi guys

I've copied a list of queries from an Infocube to a multicube

Now, I want to change all existence of the old queries with the new ones.

the queries exists in several areas:
1. Workbooks
2. Broadcasts
3. APD processes
4. SAP Portal roles
5. BO Webi reports

I've managed to find related tables for areas 1 and 2
Any suggestions for how to get "Where used list" for areas 2,4 and 5 ?

Any info will be appreciated

Thanks

Shlomi