Here is my problem.
The 'incidentExport' & 'incidentPersist' works fine.
However, the new action 'uploadIncidentReport', does not do well.
After the method return SUCCESS, the redirect url is .../incidentDetail.action, which should be .../incidentDetail.action?currentIncidentId=*.
I guess is something wrong with <interceptor-ref name="defaultStack" />.
Maybe it has some conflicts with redirecting to an action needs a param?