Is it expected to have more than one RMAN incarnation with CURRENT status for the same db?

Hi everybody,

While writing some queries on RMAN catalog views found that some databases have two or more incarnations with CURRENT status.

RMAN> list incarnation of database 'TEST11G';

List of Database Incarnations

DB Key  Inc Key DB Name  DB ID            STATUS  Reset SCN  Reset Time

------- ------- -------- ---------------- --- ---------- ----------

20500573 20501011 TEST11G     1024672251       PARENT  1          21-JUN-12

20500573 20501012 TEST11G     1024672251       PARENT  5886271211177 26-SEP-12

20500573 20501013 TEST11G     1024672251       ORPHAN  5912176860994 02-JUL-13

20500573 20500574 TEST11G     1024672251       PARENT  5945029651945 18-JUL-14

20500573 20576349 TEST11G     1024672251       CURRENT 5945038937439 23-JUL-14

21048367 21048730 TEST11G     1087033139       PARENT  1          21-JUN-12

21048367 21048368 TEST11G     1087033139       CURRENT 5957252775619 04-SEP-14

We use to provision dev/test environments by restoring prod backups. My understanding as per documentation is that only one incarnation should be CURRENT at a time.