I am sorry, but I don't understand parts of the question.
There is no "dashboard import" so I don't know what you have actually done. There are project imports, but they have no effect on permissions for existing projects, so I'm still a bit stuck on what you have done
The only import action I can think of that would lose you "access" is a full system import from a backup. If you've done one of those, you've not lost access to your existing projects, you've completely destroyed them - a full system import overwrites everything.
Connect with like-minded Atlassian users at free events near you!Find an event
Connect with like-minded Atlassian users at free events near you!
Unfortunately there are no Community Events near you at the moment.Host an event
You're one step closer to meeting fellow Atlassian users at your local event. Learn more about Community Events