I just saw this as I was loading a form and have not investigated further. In the database the deployment id associated with the form is 410, but the form data returned using the taskId was 1410. Any idea how this could happen? Some DbIdGenerator issue? Restarting the server solved the problem.
It happened once again, but I have not tried to reproduce the error.
I'm doing many redeployments of processes while leaving my server (tomcat) running and just starting the newly deployed definitions. Mostly this is working as expected. The really strange thing is that the id is almost correct. It is just out by 1000.
Forgot to mention that I'm using Oracle if that makes any difference.