Well, that’s kind like OJ Simpson running for a 30 yard gain, which gets called back for a holding call behind the NZ (no, not for a murder). That run never existed, officially. Since the pitches from that previous at-bat don’t carry over, it seems to me that the previous at-bat never existed, either. In physical reality, yeah, 10. But, officially, only 6.
Either way, Bubba (base runner or OJ’s blocker) is on the bench eatin’ another hot dog, and doesn’t really care.