I understand the concern but I'm not asking you to delete them you can simply move them to a different location, Resetting the preferences will take your lightroom back to factory settings. If resetting preferences doesn't work, then you can put the files back to their places. If you reset your Preferences file, the obvious settings that you lose are those in the Preferences dialog, but it also includes other details such as your View Options settings, last used settings, FTP server details, some plug-in settings, your country, etc. Your original photos, Develop settings, Develop defaults, collections, presets and other important settings aren’t affected by deleting the Preferences file. The Store presets with this catalog setting also reverts to default (unchecked) if you reset the preferences file, but the presets themselves are perfectly safe, and checking the checkbox in Preferences causes the presets to reappear. On Lightroom CC, there are also separate startup preferences which don’t usually need resetting. These include the last used catalog path, the recent catalog list, which catalog to load on startup and the catalog upgrade history.
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