I joined a new Team "for the first time, and there seems to be a new “My Workspace” within teams also.
At one point i assumed I lost all my collections in my personal “My Workspace”. But then after playing a bit around I was able to switch back to my single account and my personal “My Workspace”. And not the new “My Workspace” inside the Team. And got back my collections
Hey @sanchivarma 
Welcome to the Postman Community! 
Did you join a new Workspace or a new Team?
If you click on your avatar in the top right corner of Postman, do you see any other team or personal accounts there?
Hi Danny. I updated the post. Also would highly suggest to rename the “My Workspace” inside teams to, say “My Team Workspace”, so new users like me using the Teams feature first time will not be confused with seeing My WOrkspace again but empty. Thankyou
Which version are you using that what was the visibility icon on your “My Workspace”?
For the team, that would have a “Team Workspace” but any other “My Workspace” in the team would have been been the result of a change in visibility from someone else in the team.
Without seeing what you have and what you were seeing, it’s tough to know what you saw.