This content was published: February 15, 2016. Phone numbers, email addresses, and other information may have changed.
Cleaning content duplicates in your D2L course
Posted by Andre Temkin
Last week while working on the Faculty Help Desk, I had few phone calls from PCC instructors that had a similar nature. These folks made duplicates while copying course content from an old shell to a new one and asked for help with cleaning up. If you run into this situation and have multiple copies of the content in your course, the most straightforward solution is to delete everything in this shell and copy the content from the previous shell one more time.
While there is no simple “clear everything” button in D2L, the procedure of cleaning is fairly simple and will take you just a few minutes to do.
Delete News Items 
Choose Go to News Tool in the News widget on your course Homepage. Select all your news items and click Delete.
Delete Course Files
Go to Edit Course and then to Manage Files area. Select all the files and click Delete button.
Delete Content Items
Go to Content from Navigation Bar. Find a drop-down action menu on the right from Table of the Content and choose Delete
Delete Dropbox Folders
From navigation bar go to Dropbox area. Select all the Dropbox folders and choose Delete under More Actions drop-down menu.
Delete Discussions
Go to Discussions list from the Navigation Bar. Choose Delete and More Actions drop-down menu. Select all on the next screen and choose Delete at the bottom of the screen.
Delete Quizzes and questions in Question Library
Go to list of Quizzes from Navigation Bar. Select all quizzes and choose Delete under More Actions action menu.
Go to Question Library tab. Select all the questions and use Delete button. This item is the most often missed!
Delete Grade Items
Go to Grades from the Navigation Bar and choose Manage Grades tab. Choose Delete option under More Actions drop-down menu. Select all items on the next screen and use Delete button on the bottom.
That’s all. You should have an empty shell now and only one area should stay untouched is your Classlist. It should still have all you students listed.
Now you can go back to Export/Import/Copy Components and make a content transfer one more time.

You’ll want to delete any: (if you have them)
Custom Homepages
Custom NavBars
Custom Widgets
Such a handy quick guide! Thanks Andre!
If you have any of these more uncommon elements in your course, you will need to delete them too:
Rubrics
Surveys
Self-Assessments