Yeah, that's right. There was a break in the dub production for a year or two, and I think they put out Episode of Sabo soon after they resumed as a way to drum up hype for the big arcs they'd be dubbing in the future. Fortunately McGropey was already out of the picture before they hit Dressrosa proper and we got the big upgrade to JYB. Fun fact: his original Japanese actor, Toru Furuya, was also involved in an awful sex scandal and stepped down from the role. If I had a nickel for every time etc. Morgan Garrett is credited as young Sabo's voice.
Yeah, I was surprised to see that, I didn't remember that we saw his power way before he was actually introduced.