I have no idea what you are talking about.
I think that probably pretty much answers it. Who cares
If we can swallow two people playing Saavik, we can handle a minor guest character. I just googled and they both hardly had a role in both appearances.
Well the circumstances behind Saavik being recast are pretty well known, and I think it was far more important to carry her over from II to III than it was to bring back Neral.