User blog comment:MahApplez/ I CAN GET THE V3 AND V4 EDITOR???/@comment-3076833-20141213181413/@comment-2121396-20141214045138

Here's how V4 Importation Works:

V2 VBs are converted by V3 into V3 VBs

V4 converts V3 VBs into V4 VBs

You can convert your VOCALOID2 voicebanks into VOCALOID3 voicebanks using either the Tiny VOCALOID3 Editor or the VOCALOID3 Trial Engine they offer on the VOCALOID Store website.