You can bring animation that is already open in the Maya scene for editing in the Time Editor. There is a different method for bringing files into the Time Editor when they aren't already loaded. To bring files into the Time Editor, see 
		
Import animation into the Time Editor. 
		
Note: There must first be an object to which you want to add animation 
		  already in the scene when adding animation files onto a Time Editor track. 
		
 
	  
Add Maya scene animation to the 
		  Time Editor
 
		 
		 The Time Editor supports animation made of keyed attributes driven by animation curves. You can also animate attributes animated by non-curves (such as constraints, expressions, and so on). Use the 
		  Constrained option in the 
		  Attributes to be Added section of the Time Editor 
		  Add Animation to the Time Editor options window for these attributes. 
		
 
		Note:  The Time Editor overrides constrained attributes if you import animation for these attributes when there already an existing rig in your scene and the Time Editor is not muted. Use the 
		  
Allow clip creation to override existing constraints option in the Time Editor area of the 
		  
Animation (Settings) preferences to prevent constrained attributes from disabled by the Time Editor when you import a clip. 
		
 
 
		- Select the animatable attributes you want to edit (skeleton, controllers, etc.) in the Viewport or 
			 Outliner. 
			 
Important: Make sure that the object's animation is selected and that its keyframes appear in the Time Slider. If it is character animation, make sure that the 
				
Include Entire Hierarchy option in the 
				
Add Animation to the Time Editor options is turned on so you can bring in the animation applied to the entire Character. 
			 
 
 
		   
- In the 
			 Time Editor, select 
			 > 
				
 from the 
			 Time Editor menu bar. The 
			 Add Animation to the Time Editor options window opens. 
		   
- In the 
			 Add animation to the Time Editor options, choose which animatable attributes you want to import. See 
			 Add Animation to the Time Editor options for more details about these options. 
		  
 
 
		All 
		  Time Editor Animation Sources in the scene appear in the 
		  Outliner to display any Animation Sources and can be reapplied at any time. See 
		  Create clips from Animation Sources. 
		
 
		Note: When any attribute is in use by the Time Editor, they are highlighted in pale orange in the 
		  Channel Box and the 
		  Attribute Editor.