Its pretty clear that at least some "goju" kata pre-date Higashionna trips to china.
Several kata were demonstrated publically well before that time.
I would really love to find out exactly what Aragaki was trained in and what his teaching consisted of.
(course I would love to know that about of a lot of the "old masters"
One of my buddies suggests that one possible explaination for Okinawains being albe to train in china--some of them anyway--is that a link exsisted between Okinawan offcials and martial arts teachers in china.
That they were not going to wander about china looking for instruction--they had a good idea of whom and where to go too prior to travel--and they had a pretty good idea that they would be able to train.
Take into account the Okinawan hostel in Fuzou, the number and longevity of diplomatic links, the number of okinawans that trained in the region, nature of the realtionship with china etc.
He may have a real point.
What is also pretty clear that in-so-far as "goju" is concerned, a number of folks learned from RyuRyuKo--whomever that might have been.