Confirmed Dead...or Alive?

I've been You Tube-ing the Japanese Headmaster, and Victory series; and in them Wheeljack and Prowl are still alive. Wheeljack is a major character in Transformers Victory, and Prowl is seen regularly alongside Ultra Magnus in the Japanese version of Headmaster. Slight problem, Prowl was confirmed to be amongst the dead in the Autobot tomb in "Dark Awakening" back in Transformers 2010. Wheeljack was never actually confirmed dead; we just saw him badly damaged in the animated movie. Any explanations as to how Prowl turned "Lazarus", and somehow appears to have come back to life?
Fan Fiction could explain that Prowl was on an undercover mission and his death was faked....but was there ever an official explanation outside of the usual G1 flub of continuity?
Fan Fiction could explain that Prowl was on an undercover mission and his death was faked....but was there ever an official explanation outside of the usual G1 flub of continuity?