When confluent platform 7.2.1 shut down all connector disappear

Hey,
I have some trouble when I use confluent platform 7.2.1, so in the title when my computer reboot or when i shut down confluent all of connector I created disappears and I must begin from crashed!
What is the reason?
Thanks

Answered here What's the next after kafka source connector? - #7 by OneCricketeer