Apple Motion 4 - Manual (Page 252)

You can also delete the object that appears in the Media tab. Doing this also removes all
corresponding instances of that object in your project.
To delete one or more objects from a project
1 Select one or more objects by doing one of the following:
• To delete a single object, select it in the Layers tab, the Timeline, or the Canvas.
• To delete multiple objects, Shift-click to select the objects.
Note: In the Layers tab or Timeline, you can Command-click to select noncontiguous
objects.
2 To delete the selected objects, do one of the following:
• Choose Edit > Delete.
• Press Delete.
The objects are deleted from your project, but their corresponding source media files
on disk remain untouched.
To delete all objects that correspond to a single object in the Media tab
1 Open the Media tab, then select the source media you want to delete.
2 Do one of the following:
• Choose Edit > Delete.
• Press the Delete key.
A dialog appears and prompts you to confirm the deletion.
3 Click Delete.
Exchanging Media in a Project
You can exchange any layer in your project with a different object in the File Browser or
Library. This breaks that layer’s original source file link and creates a new link to the file
you’re exchanging. When you exchange a layer’s source media, the object in your project
retains all of its Property tab parameter values (including the Position, Scale, and Opacity
parameters), selected blend mode, nested filters and behaviors, masks, and keyframes.
The exchange operation allows you to replace layers in your project even after you’ve
modified and animated them. If you’re unhappy with a particular element of your
composition, exchange it with a new one.
Important: You can only exchange layers that are linked to media files on disk. You cannot
exchange Motion-generated objects such as particle systems, generators, or text objects.
252 Chapter 6 Creating and Managing Projects