What fireproof said, what SNW is doing is no worse than Obi-Wan seemingly not recognizing the droids or Artoo seemingly not recognizing Yoda or Vader building Threepio and so on. The type of explanations developed for SW prequels so far have been enough for Trek.The Gorn, chapel/spcok, Kirk knowing Pike more than just one meeting ...need i go on..?
Prequels are nothing new. They've been around throughout fiction. For example, Watson doesn't recognize Moriarty in the Final Problem but is familiar with him in the prequel the Valley of Fear. No explanation has ever been provided, other than Watson apparently having a faulty memory. At least SNW writers take a cursory glance at the relevant TOS episodes and write to force-fit their prequels, which is more than Sir Arthur Conan Doyle apparently did.