Board Thread:Character Discussion/@comment-25355646-20150302022703/@comment-1894786-20150425014820

Rumple implied that the spell summoned Chernabog from the Enchanted Forest using the hat as a portal. Plus, the Chernabog episode (unless my timeline is completely off) should take place after Belle is his servant (I doubt the QoD would wait too long to exact revenge as they did in the Gauntlet episode) which means the Hat is already with the Apprentice again. Meaning the Sorceror could've pulled Chern back into the Hat and had the Apprentice stash the Curse somewhere else. But they didn't.

Speaking of the QoD, we were told they each had individual history with Regina and Rumple. We've only seen Regina and Maleficent. The other two have collective history with Rumple, Snow and Charming. We don't even have individual history for Cruella and Ursula aside from their origin episodes.