LR 13 finally provides enough functionality for plugins to provide batch (bulk) editing of keywords. The latest version of the Any Tag plugin has the ability to export keywords and their attributes to a .csv text file, edit the file, and import the changes back into the catalog. You can edit the file in Excel, Google Sheets, or a text editor, changing keyword attributes and names, adding and deleting keywords, and rearranging the keyword hierarchy. So if you want to change the Include On Export attribute for all or some of your keywords, Any Tag gives a straightforward way to do it.
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