To delete all geometry caches
All of your object’s geometry cache nodes and corresponding cache clips are deleted. Whether or not your object’s geometry cache files on disk are also deleted depends on your current Delete Geometry Cache Options window settings. See Delete Cache Options.
To delete geometry cache frames
The frame or range of frames specified in the Delete Geometry Cache Frames Options window are deleted from your object’s geometry cache. The gap in your geometry cache resulting from the deletion of frames is interpolated linearly. See Delete Cache Frame Options.