Mystery solved. I had issues initially adding it into Haas yesterday, because it initially didn’t connect via S2 security. I had to exclude it and include it again. It would appear that I had named it initially as Dishwasher Flood, but when I included it again, I left the default name. It would appear that the initial inclusion hasn’t fallen off of MSR yet. When I searched for Water Sensor in MSR, it shows up correctly.
So, operator error, not a problem with MSR or Haas. Thank’s for taking a look.