Pika - Preferred Grouping Title (Cataloging)

The Preferred Grouping Title will replace every instance of the Source Grouping Title for any grouped work with that Grouping Title, not just for a single grouped work of interest. This is for legitimate variations on a title where records will have one form of the title and some with another form of the title.  Both forms of the title are right and there is not a normalization or cataloging problem.  In that case, there is more than one way to catalog a work, so the Preferred Grouping Title form is used to ensure that both variations of the title group together.