AEON HEM No longer reading Watts

I have a Vera 3 with the latest UI7 and a Home Energy Monitor - they worked fine with DataMine2 i was graphing the watts
However the Aeon Home Energy Monitor (single clamp) had a large number (around 30) subdevices called something - I disjoined the main device - and rejoined and all the subdevices were gone - however DataMine2 can no longer see a variable called Watts

looking at the Ghost variable in DataMine2 it says it was
Service urn:micasaverde-com:serviceId:EnergyMetering1
Variable Watts

When I look at the newly joined device for the HEM it has the service with only two variables KWH and KWHReading
Can I, should I , is it safe to, just go in and try and add the variable or the service under the advanced tab?