Outlook Predictive address deletion

Greetings,  recently my company spun us off and all our email addresses changed.  An annoying problem when using Outlook to create a new email is that it "predicts" the address of the person as I am typing it in.  Because of the spin off this is incorrect
99% of the time and it seems to never remember the new address.  I don't want to shut off this feature but I want to delete the file that has all this information on old addresses and start over.  Someone suggested I delete the "*.fav" file which I did but it didn't make and differnce.  Any help would be appriated.  
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Check out this link:
How to reset the nickname and the automatic completion caches in Outlook

Basically just rename the .nk2 file. But read the article.

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