Do they work with secLDAP in 3.1 SP5?
Generally the QaaWS links are in this format:-
http://servername:8080/dswsbobje/qaawsservices/biws?WSDL=1&cuid=AY0nrN5SQ8BChpRmNI9EZPws
irrespective of the authentication type you used while creating it.
So, would like to know how have you modified the url?
Also, share screen short for step by step of your workflow.
-Raunak