Board Thread:Episode Discussion/@comment-34633327-20180112214926/@comment-4010415-20180115172220

SpiritedDreaming wrote: I was replying to Tinkerloki's question about the previos Spring Maiden being Summer, and explaining why that wasn't the case, Ben.

They didn't retcon anything. There was a Spring Maiden at Haven, she disappeared over a decade ago, Qrow thought she had found shelter in Raven's tribe. No one knew the current one was Raven because of the ruse she had going with Vernal and the fact that she wore the mask all the time. The previous Maiden - the one who Leo knew at Haven - died sometime between her disappearance a decade ago and V4, and Raven got the power somehow.

Absolutely no retcons involved. This also explains why CRWBY changed her mask to where we can no longer see her eyes through the eye holes.