I need to get Customer Contact (CustCnt) information for Sold To, Bill To and Ship Tos in the Sales Order Acknowledgement. I know I can’t add the table more than once, or have different joins. (Search did turn that much up). Could I work around it by using Report BAQs? I haven’t found anything that said for sure that you can specify a relationship for differently named BAQs getting data from the same table. ie, can I have CustCnt in the RDD for the BillTo, then have a BAQ for the Sold To (linked from OrderHed) and the ShipTos for OrderDtl/OrderRel in another BAQ. Just want to know if it can be done before I spend a lot of time working on it 
It would appear the answer is no, since the option to even add a Report BAQ is greyed out. I’ll leave this for now, just in case someone else runs into it. I think I can work around it by sucking in all the contacts for a customer, then modifying the RDL query to split things out.
I read on a topic here that Making a BAQ Report should be done via an RDD, and to migrate away from BAQ Report designer. When it was said that you can add BAQ’s as datasources, I got very excited. Only to be disappointed when I realized you can only add them to a new RDD, not an exiting one. 
Yeah, I’m very frustrated with RDD. There are MANY cases where you would want to link to the same table more than once with aliases. RDD not having a mechanism for this seems very short sighted.