Click the Assignments tab.
Click Show All Options › Sync Due Dates to LMS.
Related information
After adding activity links from LTI Advantage LMS, your assignments' available dates and due dates sync to LTI Advantage LMS based on your settings. If automatic syncing fails, you can request a manual date sync to LTI Advantage LMS.
Click the Assignments tab.
Click Show All Options › Sync Due Dates to LMS.