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General instructions on how to use the Release Plugin can be found on the usage page. Some more specific use cases are described in the examples given below. Last but not least, users occasionally contribute additional examples, tips or errata to the plugin's wiki page."
The March 2015 thread between Herve Boutemy and Martin Gainty on the maven-dev mailing list seems to document the problem and provide the base URL for a new URL...
> From: email@example.com
> To: firstname.lastname@example.org
> Subject: Codehaus EOL and MAVENUSER Confluence Wiki
> Date: Wed, 4 Mar 2015 02:20:09 +0100
> I got a report from someone about links from Jira to old Codehaus MAVEN
> Confluence Wiki : I explained that we already copied the content to ASF
> MAVENOLD  as read-only and copied useful content to ASF MAVEN 
> Then ok for Codehaus MAVEN Confluence Wiki.
> But what about Codehaus MAVENUSER Confluence Wiki ?
> Is the whole content useful? Should we have the same strategy than MAVEN? Who
> could do that?
MG>Codehaus content is useful..but will require resource who can understand and write legible
MG>Can Igor port the pages with cyrilic to ASF MAVEN?
> Or should we only copy relevant pages to MAVEN? How to do that (I didn't find
> any way to export even a simple page to later reimport)
> Any thoughts?
>  http://docs.codehaus.org/display/MAVEN/
>  https://cwiki.apache.org/confluence/display/MAVENOLD/
>  https://cwiki.apache.org/confluence/display/MAVEN/
>  http://docs.codehaus.org/display/MAVENUSER/