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Run a search
Click Remove results from the Index from the Admin Options panel
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There are four options:
Remove From Index - removes selected items from the search index
Remove Thumbnail - clears thumbnails and preview images from the Voyager /meta folder
Remove Metadata - deletes XML files that are saved in the Voyager /meta folder
Remove Layer - wipes out any layer files associated with the item in the /meta folder
Click Remove to clear the items you chose
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Go to Manage Voyager > Index > Backup and Restore
Click Wipe the Search Index
Click Yes, Clear the Index