It seems that there's no way to detect whether an existing contact has had other contacts merged in. This is needed for our planned "undo dedupe" feature, and is also useful for queries where we need to take dedupedness into account.
|Open||None||T77938 [epic] Dedupe CiviCRM|
|Resolved||None||T111702 [epic] Dedupe exact matches|
|Duplicate||None||T124695 Civi: can the Change Log be used to recover contribs that have been inadvertently deleted?|
|Open||None||T117630 Dedupe merge failed to relink a contribution?|
|Resolved||None||T117466 Q3 GOALS! (January-March) Keep at top of Q3 column|
|Resolved||None||T111704 [epic] Make deduping reversible|
|Resolved||Eileenmcnaughton||T119426 Civi should record merge activities on both old and new contacts|