Error "Could not find definition for port" occurs after migrating web services from EAP 5 to 6

Issue

• We are migrating an EAP 5.1 application to EAP 6.1.
• We are trying to compile and deploy their existing EAP 5.1 application, which used the EAP provided CXF libraries, in EAP 6 and are seeing the exception below at deployment.

13:26:21,429 ERROR [org.jboss.msc.service.fail] (MSC service thread 1-2) MSC000001: Failed to start service jboss.deployment.subunit."myapp.ear"."my_ws.war".INSTALL: org.jboss.msc.service.StartException in service jboss.deployment.subunit."myapp.ear"."my_ws.war".INSTALL: JBAS018733: Failed to process phase INSTALL of subdeployment "my_ws.war" of deployment "myapp.ear"
        at org.jboss.as.server.deployment.DeploymentUnitPhaseService.start(DeploymentUnitPhaseService.java:127) [jboss-as-server-7.2.1.Final-redhat-10.jar:7.2.1.Final-redhat-10]
        at org.jboss.msc.service.ServiceControllerImpl$StartTask.startService(ServiceControllerImpl.java:1811) [jboss-msc-1.0.4.GA-redhat-1.jar:1.0.4.GA-redhat-1]
        at org.jboss.msc.service.ServiceControllerImpl$StartTask.run(ServiceControllerImpl.java:1746) [jboss-msc-1.0.4.GA-redhat-1.jar:1.0.4.GA-redhat-1]
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) [rt.jar:1.7.0_17]
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) [rt.jar:1.7.0_17]
        at java.lang.Thread.run(Thread.java:722) [rt.jar:1.7.0_17]
Caused by: javax.xml.ws.WebServiceException: org.apache.cxf.service.factory.ServiceConstructionException: Could not find definition for port {urn:com:example:myapp:services}SampleServicePortTypeImplPort.
        at org.apache.cxf.jaxws.EndpointImpl.doPublish(EndpointImpl.java:368)
        at org.jboss.wsf.stack.cxf.deployment.EndpointImpl.doPublish(EndpointImpl.java:66)
        at org.apache.cxf.jaxws.EndpointImpl.publish(EndpointImpl.java:250)
        at org.apache.cxf.jaxws.EndpointImpl.publish(EndpointImpl.java:536)
        at org.jboss.wsf.stack.cxf.configuration.NonSpringBusHolder.configure(NonSpringBusHolder.java:116)
        at org.jboss.wsf.stack.cxf.deployment.aspect.BusDeploymentAspect.startDeploymentBus(BusDeploymentAspect.java:128)
        at org.jboss.wsf.stack.cxf.deployment.aspect.BusDeploymentAspect.start(BusDeploymentAspect.java:67)
        at org.jboss.as.webservices.deployers.AspectDeploymentProcessor.deploy(AspectDeploymentProcessor.java:74)
        at org.jboss.as.server.deployment.DeploymentUnitPhaseService.start(DeploymentUnitPhaseService.java:120) [jboss-as-server-7.2.1.Final-redhat-10.jar:7.2.1.Final-redhat-10]
        ... 5 more
Caused by: org.apache.cxf.service.factory.ServiceConstructionException: Could not find definition for port {urn:com:example:myapp:services}SampleServicePortTypeImplPort.
        at org.apache.cxf.wsdl11.WSDLServiceFactory.create(WSDLServiceFactory.java:179)
        at org.apache.cxf.service.factory.ReflectionServiceFactoryBean.buildServiceFromWSDL(ReflectionServiceFactoryBean.java:416)
        at org.apache.cxf.service.factory.ReflectionServiceFactoryBean.initializeServiceModel(ReflectionServiceFactoryBean.java:538)
        at org.apache.cxf.service.factory.ReflectionServiceFactoryBean.create(ReflectionServiceFactoryBean.java:252)
        at org.apache.cxf.jaxws.support.JaxWsServiceFactoryBean.create(JaxWsServiceFactoryBean.java:205)
        at org.apache.cxf.frontend.AbstractWSDLBasedEndpointFactory.createEndpoint(AbstractWSDLBasedEndpointFactory.java:101)
        at org.apache.cxf.frontend.ServerFactoryBean.create(ServerFactoryBean.java:159)
        at org.apache.cxf.jaxws.JaxWsServerFactoryBean.create(JaxWsServerFactoryBean.java:211)
        at org.apache.cxf.jaxws.EndpointImpl.getServer(EndpointImpl.java:453)
        at org.apache.cxf.jaxws.EndpointImpl.doPublish(EndpointImpl.java:333)
        ... 13 more

• We are using a "meet-in-the-middle" web service development approach; we have written a WSDL and the web service implementations. But the CXF factory in EAP 6 can no longer find the service class under the proper name.
• In EAP 5.1, it was able to properly recognize the SampleServicePortTypeImpl service class. In EAP 6, it is looking for SampleServicePortTypeImplPort ("Port" added to the end of the name), and this class is not found.