New Smart lighting app question

Does anyone know what this red line means in the new Smart lighting app?

This is an ST motion sensor in my kitchen that controls Hue bulbs over my sink. The automation is working fine… I’m just wondering if maybe it represents local control. Like, does the red line mean it is NOT running off the hub…???

If you press it, it will delete the selection you made

Wellll, how convenient! It never even occurred to me to try that. Thank you!