En çok kullanılan senkronizasyon özellklerini bir arada topladık.
Sync for JIRA 
Just install the plugin and create your filter to get the issues from remote JIRA server to your own JIRA server.
Configure the parameters including remote user name, password, JIRA URL, JQL, maximum issue number, period, custom fields.
Write your own JQL ! Then, issues will be fetched from the remote JIRA then it will be created in your own JIRA regarding your project name and issue type configuration in the admin panel. Not only the system fields will be match, but also you can match the custom field values of the issues.
Field Sync 
Field Sync plugin allows you to synchronize the configured field values between an issue and it's sub-issues.
Bi-Directional Sync
Bidirectional sync feature means, field value synchronization will be applied to both parent issue to sub-issue and sub-issue to parent issue.
Advanced Configuration
This plugin provides advanced configuration including project name, issue type, sub-issue type, fields. Besides, 'Sync on create' and 'Allow sync on not editable issues' features !
Worklog Sync 
Worklog Synchronizer plugin lets you synchronize the worklog between the linked issues in JIRA.
Add, Remove or Change the worklog !!! Any activity will be directly processed to the linked issue.
Just configure the Link Type and Link Direction settings to apply the sync feature.
Detailed configuration with Legacy Mode
Enable Legacy Mode and choose a specific user to sync worklogs between the issue and it's linked issue. If there is a sub-task which is assigned to this user, the worklog sync will be implemented to this user's task in the linked issue.