Confused about web service Consumer address priority

[erossing.26610 (Evelyn Rossing)]

I’m a bit confused about the priority of the web service Port address between the Binding setting from the WSDL, a Web Service Alias, and the _url parameter.

I’m using IS version 9.7. The 9.7 Web Services Developers Guide has this note on page 227:

Note: If a value is specified for the _url input parameter for a web service connector the
url value takes overrides the original URL from the WSDL. Additionally, Integration
Server ignores the host and port information provided in the consumer web service
endpoint alias.

I read this as meaning that the _url parameter overrides both the WSDL value and the Web Service Alias setting. However, the table immediately following that note and my experience suggest that while the _url parameter overrides the WSDL URL, any host and port values from the Web Service Alias will override those parts of the _url parameter.

Is there any way to have a Web Service Alias defined, but also have the _url parameter override that when used?

Thanks!