I imagine that the preferred title of a work is much less likely to change over time than a person's preferred name. 

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From: Program for Cooperative Cataloging <[log in to unmask]> on behalf of Gene Fieg <[log in to unmask]>
Sent: Thursday, December 1, 2016 4:13:56 PM
To: [log in to unmask]
Subject: When to use existing authority, when to change
 
I notice that under constructing personal names, we are generally not to change the name it has been already established, usually under AACR2 guidelines.

What about authority records for titles?  I do not see such a proviso for titles.  Why or why not?

Gene Fieg