A testcase contains 2 requests and 1 groovy script.
Now 1st request is using POST method and 2nd request is using GET method.
POST
GET
Now I am
Refer my answer here:-
http://stackoverflow.com/questions/34786729/if-a-request-is-changed-to-post-then-soapui-changing-all-other-requests-into-po/34831359#34831359
there I have described a full example to achieve the issue