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Click the cog icon (Administration) > Manage apps > under Salesforce, select Connector for Salesforce & Jira Migration.
Read the disclaimer and click Accept to view the migration steps page.
Click the Disable button to stop any current synchronization between the Jira server and Salesforce.
Step 2 -
Click the cog icon (Administration) > Manage apps > under Salesforce, select The green check mark confirms that the Classic Connector for Salesforce & Jira Migration. Read the disclaimer and click Acceptand Jira app has been successfully disabled.
Next step:
Click Step 2 - Starting the migration process from the menu on the left.