You can clear the contents of an index in the Index Landscape window in the context menu with function Clear Index. The index and its parameters are retained.
You only use this function in the following cases:
The application that is connected to TREX receives no information on the emptying of the index. This means that the information the application stores on the index is not the same as the information TREX has. You may no longer be able to administrate the index on the application side.