The parameter you're trying to set is at the application level, not the interface level. You need to replicate the exact structure that you find in the reference files.Your application.xml should look like this instead (assuming your branch is set to use Submit Locking model:<applications><param id="iw.common.edit.submit_lock_model.lock_on_edit" value="false"/></applications>That should remove the greedy locking.
I'm assuming you ran make_toolkit.ipl in between changes?I'd say this is the point where you phone support and ask them why the parameter is being ignored.