MS Project importer for Jira helps you to import your Microsoft Project tasks, dependencies, and task structures into Atlassian Jira. Collaborate on your issues as a team right within Jira instead of Microsoft Project.
Please be noted that this add-on cannot be added to Jira without having another add-on WBS Gantt-Chart for Jira.
WBS Gantt-Chart for Jira is known as a Microsoft Project alternative add-on for Atlassian Jira users. Please see this Marketplace listing page for the details.