Same here, all of my workspace queries disappeared and now i am sitting on a production outage caused by postman of all things - cannot update without these queries.
I will be moving away from postman going forward, this is outrageous. I already had one outage when postman forced me onto the cloud after an update and didnt transfer my local queries and now a SECOND outage when my local machine is working totally ok. My queries on the cloud broke? Are you joking?