Why would HA upgrade change sensor names?

I’ve been using HA since September. I have several zwave sensors, aotec and ecolink specifically, that worked just fine up until I upgraded from 0.29 to 0.3x. The automation I have setup stopped functioning, and after troubleshooting this morning I noticed that the sensor names have changed. They all now have a _0 on the end. I’m now running 0.32.2 and had to go into my config and add _0 to the end of my sensor names to make them work. Just curious if this is expected behavior, and if this will continue in future upgrades?

That was a necessary breaking change in .31

See the notes here:

thanks ih8gates, appreciate the link. i wasn’t sure which release busted it. sorry to waste your time, shouldve rtm.