Emails added to Child Case Post-Merge aren't rolled up to the Parent Case

You are using Case Merge Premium and notice that emails added to a Child Case post-merge aren't being rolled up to the associated Parent Case.

Symptoms
Solutions
Status
Additional Information
Title
Emails added to Child Case Post-Merge aren't rolled up to the Parent Case
URL Name
Emails-added-to-Child-Case-Post-Merge-aren-t-rolled-up-to-the-Parent-Case