@kevin1
I have looked at the power meter for the time when the plugs stopped reporting usage, and posted screen shots of that here ( KP115 worked 2 days now missing from Sense - #8 by demiller9 ). There is no gap in the power meter, yet the timeline told me (shown in post #11) that the refrigerator and the garage door opener went offline at 5:40 AM.
And just slightly off track, I replaced the workbench KP115 with an HS300 which has been in since Jan 27 (8 days) and still appearing in Sense. The KP115 I took off the workbench is now plugged in elsewhere with no load at the moment.