Somewhat, yes.
Originally Ebonhorn in Highmountain was Wrathion in disguise and at the end of events in Highmountain he finds a clutch of eggs left over and leaves with them.
However they kind of realized that the timeline for Wrathion as Ebonhorn made no sense, since he had been advising the Highmountains for like, centuries, whereas Wrathion has only been alive for a handful of years.
They changed things to Ebyssian and altered other things since.