Hello!

We faced with problem that our JQL queries stopped working on JIRA version 6.2.1.

We used JIRA version 6.1.2 and selected information by the JQL query:

project=<product> and issuetype=<issue type> and FixVersion was "<milestone>" on "2014-06-10 23:59" and resolution was Unresolved ON "2014-06-10 23:59"

After migration to 6.2.1 this query stopped working.

But we have detected that this query works.
project=<product> and issuetype=<issue type> and FixVersion was "<milestone>" on "2014-06-10 23:59" and resolution was Empty ON "2014-06-10 23:59"

Unresolved replaced by Empty.