Every time I close safari, any additions/changes I've made to my bookmarks, reading lists, history, favorites, etc. are not saved and reverted back, as if I made no changes at all whatsoever.
MacBook Pro (Retina, 15-inch, Mid 2015), OS X Yosemite (10.10.5)
Are you using iCloud to sync Safari data ?
Do a backup.
Quit the application.
Go to Finder and select your user/home folder. With that Finder window as the front window, either select Finder/View/Show View options or go command - J. When the View options opens, check ’Show Library Folder’. That should make your user library folder visible in your user/home folder. Select Library. Then go to Preferences/com.apple.Safari.plist. Move the .plist to your desktop.
Restart the computer, open the application and test. If it works okay, delete the plist from the desktop.
If the application is the same, return the .plist to where you got it from, overwriting the newer one.
Thanks to leonie for some information contained in this.
Safari clearing all edits to bookmarks, reading lists, etc.
