User blog comment:Neowitch/Episode of Nami - Arlong Park in a Nutshell/@comment-74.240.150.199-20120828002819

They may be doing this solely to give us better animation for the older arcs. Makes it more wathable than watch ep13 anfter watching ep500 for example. But its ore cost effective than doing all of the eps. with they would do the same with the manga but not complaining this is enough