civicrm/civicrm-core — pull request #1204 by davecivicrm (2013-07-19 23:29:05+00:00)
Title: CRM-11662 Add missing logic to copy case custom fields in CRM_Case_BAO_C...

...ase::mergeCases.

Note that the issue with case activity custom fields not being copied forwarded during merge seems to have been fixed w/ previous refactoring. I could not recreate that problem.
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* CRM-11662:
http://issues.civicrm.org/jira/browse/CRM-11662