In case you want to synchronize two JIRA Server instances you can choose from all options and features available.
Only limitation you have to consider is available IssueSYNC version for your JIRA version.
| JIRA versions | Plugin sufix |
|---|---|
| 7 | none |
| 6.3-6.4 | -j64 |
| 6.0-6.2 | -j60 |
Given example versions listing (current is available here https://marketplace.atlassian.com/plugins/com.intenso.jira.plugins.synchronizer/versions) :
- JIRA 6.0-6.2, use 1.3.4-j60
- JIRA 6.3-6.4, use 1.4.1-j64
- JIRA 7, use 1.4
Please refer to IssueSYNC Server documentation.