By default, all animation paths that are present in your drawing will be included in the resulting animation. You can choose to prevent selected paths from being included if you want.
To choose which paths you want to include in the animation:
Select Tools
> Animation > Animation Properties, or click the Animation
Properties button on the Animation toolbar. This button is also available
in the Preview Animation and Export Animation to File windows.
On the Paths page of the Animation Properties dialog, uncheck the boxes in the Include column for any paths you do not want to include.
Click OK.