If you import a group assignment or discussion from an existing course into a new course, the groups themselves will not appear in the new course. Groups in the new course need to be reset manually.
Follow these instruction to re-create the groups and associate a group with a group-based assignment or discussion activity.
As an instructor editing a new Canvas course, click People from the options in the left-hand navigation.
+ GROUP SET
Look for the button labeled +GROUP SET and click it.
GROUP SET NAME
In the dialog window that opens, enter a Name for the Group Set.
If you checkmark the option Allow self sign-up when creating a group set, remember that you must walk the students through the steps to "self sign-up." Copy and Paste into any group-based assignment or discussion the instructions found in the following article...
In the same dialog window in the section Group Structure, you may prefer that Canvas randomly split students into an equal number of groups (we advise less than 10 students in a group for manageability).
For the section Leadership, you typically leave that option unchecked and let a student group decide on its own if leadership is needed.
SAVE YOUR OPTIONS FOR CREATE GROUP SET
When you've selected from the various options for creating a group set, be sure to click the button SAVE.
ASSOCIATE THE NEW GROUP WITH AN ASSIGNMENT OR DISCUSSION
In the Canvas course, navigate to the specific group-based assignment or discussion that needs to be associated with the group you just created. As an instructor, you should click the button labeled EDIT.
Now select the group you just created in order to associate it with this group-based assignment or discussion.
SAVE GROUP ASSOCIATION
Be sure to click the button SAVE.
RECALLING STUDENT'S ASSIGNED GROUPS
Remind students they can always find their assigned groups by clicking the PEOPLE option in the left-hand navigation of a course. Then click the option COURSES & GROUPS.