It is unlikely there is any connection between the autorecover setting and the use of Adobe Acrobat. As I don't recall ever being raised elsewhere, I can see no reason to suspect your Adobe Acrobat addin is changing the Word settings. In any event, using Adobe Acrobat has nothing to do with 'saving' the file, as you're using it not for that but for 'printing' the file; an entirely different action.

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Cheers,
Paul Edstein
[Fmr MS MVP - Word]