This option removes Clash Manager report data from the project, but retains Clash Manager configuration. It performs the same function as the Delete All Clash Data, including Comments and History button on the Clash Manager Options form. The clash set definitions, check list, obstruction list are retained, but can be deleted manually.

The clash history is deleted. Remaining data is truncated to recover unused space in the Oracle Table Space. However, unlike Delete All Clash Data, including Comments and History, the Clash Index counters can optionally be reset to zero.