ssn: lost something?

Joel and I were looking at ssn today in the context of IoT  and we noticed that "ssn:Observation" has lost its restrictions for  properties "ssn:observationResultTime", "ssn:qualityOfObservation" and "ssn:observationSamplingTime" somewhere in the translation to the FPWD form.
Can anyone explain? Have any others gone missing? Is a more thorough check warranted?

--Kerry

Received on Tuesday, 28 June 2016 08:16:15 UTC