Archiving is how you keep your lists clean by hiding items you're done with.
To Archive a To-Do card:
Archiving removes an item from your main "To DO" list.
From your "To Do" list: Simply swipe the item from right to left, then tap the Archive button.
In "Catch Up": Just swipe the card to the left.
To Un-Archive a To-Do card (Bring It Back):
If you archived something by mistake, you can easily get it back.
Go to the To Do screen.
Tap the filter icon at the top right.
Toggle on Show archived. Your list will now include all archived items.
Find the item you want to restore, tap on it, and use the action menu to Un-archive it or assign it to yourself to make it active again.