Step 1 — Go to your Workflow page
On your Workflow page, click on Archived Cards.
Step 2 — Locate your Task Card
In the drawer, you can search your Card's title or scroll until you find it. When you locate your Task Card, click the more icon (⋮) and click Activate Card.
Step 3 — Activate your Task Card
In the window, confirm your selecting by clicking Activate Card. Your card will be placed in its original column before you archived it.