When we create a new Jira ticket we can see the default resolution is Unresolved'. So when we have the JQL: project=myProject AND resolution = Unresolved that will return our tickets that have been opened but not yet resolved. Which is what we expect.
However, if a ticket is say reopened, and when resolution has to be changed from Done to Unresolved, that ticket does not appear in the above JQL. It will however appear in the JQL : project=myProject AND resolution = ""Unresolved"".
I am wondering what the difference is with the Unresolved status.