We just upgraded to the 3.2.0 JBoss JBPM editing tools and the behavior has changed for the definition creation wizard. It looks like the JBPM 3 wizard now creates files with the JBPM 4 naming convention.It used to create files with the name gpd.xml, processdefinition.xml and processimage.jpg. Now it creates files with <def_name>.jpdl.xml, process.jpg and .<def_name>.gpd.xml.
This broke our file system loader code and we can't find any release notes or Jira tickets that describe why or when this change was made. I found notes in http://docs.jboss.org/tools/whatsnew/jbpm/jbpm-news-3.2.0.M1.html that show that this was intentional.
I guess this could be changed to an enhancement that there should have been a property or something to support the old format. This is a moderately large change to a product that is essentially in maint mode.