Occasionally, you may need to delete all indexed data for a document store so that the indexes can be rebuilt. For example, if preserved terms or stopwords change, delete and reindex all documents to affect the changes.
Dropping all index stripes
From the Document Stores page, select a document store and click Index Information.
Click Drop Indexes. All indexed data structures for the current document store are removed from the system.
If you drop a passive document stores indexes, the external
process is not notified. For example, if you drop the indexes of
a Web robot's passive document store, you must also edit the Web
robot to re-run with force refresh enabled, to ensure all pages
are redownloaded and reindexed.