If you cannot merge content from an active presentation, and you are the Author or a Company Administrator for the presentation, check to be sure that the presentation is set to allow copying.
To check this setting follow the steps below:
- Edit Presentation
- Navigate to the Settings tab in the top right.
- Select Access on the side navigation.
- Confirm under the Permissions Section, that Allow authors to copy presentation is selected.
Presentations must be set to allow copying if they are to be merged.