Here is a very interesting find; a memo detailing the upcoming production schedule for the episodes of He-Man and the Masters of the Universe that would end up part the 1985 batch! There is a lot of interesting information on this page, including the dates of the voice actor recordings as well as what episodes were grouped together. Interestingly, "Journey to Stone City" is missing, and in its place is a different episode entirely titled "City of Children". One has to ask, whatever happened to this episode?
(click on the image to see it at full-size)