There are 2 ways to know if 'Terminate all coverage' did or did not work. 1) There is no change in your application/enrollment status (initial enrollment), even after logging off and back on. 2) (advanced users only) If you use the Firebug add-on, you will see in the REST calls in the console log that there is no response at all to the 'Terminate all coverage' call. Note well that it didn't work for me in my application, that also does not notify the insurer, so there may be a lot wrong with that particular application. Your mileage may vary.
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