Apparently, with the December 2018 release of acrobat, embedded indexes are no longer used for search. I have no idea why this change was made but I have an important use case involving the use of embedded indexes for some giant PDFs. i tried to follow the instructions here to reenable on macOS Steps to enable the embedded index in a PDF for searching? but I haven't had any luck. the existing FeatureLockDown.plist is something i couldn't seem to open as a plist for editing, and when I tried making a new plist and adding the key in the instructions using the xcode property list editor, it seemed to have no effect.
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