JMCF v. 2.3.0 for Jira Server and Data Center is here, and it brings the following new features:
Auto-indexing of related Jira issues makes searching accurate
When displaying an issue, the value of all its Calculated (Scripted) fields is re-computed on-the-fly. Therefore, the value of any Calculated field will always be up-to-date. But when searching for issues, Jira uses the Jira index, which stores the value of all standard and custom fields and is only updated when an issue is modified (or the index is re-built).