Within the Salesforce package we have the option to configure the push/pull and unlinking of Jira issues but we don't have a similar option to enable/disable the option to unlink a Jira issue from a Salesforce object.
Our support team are using Salesforce and our Development team use Jira. We don't want our developers to remove an association created by the Support team for a known issue or pending feature in Jira.
Adding the ability to configure the Details, Push, Pull and Unlink options in the Jira plugin configuration would be one way to solve this. (A better solution would be if this was restricted by Jira user group).