***They are in the same state as the dead were which we were told in the OT not to talk to.***
Then why did Jesus talk to them? see verse 3
Peter, James, and John clearly saw them, since Peter asked Jesus if he should make booths for the three of them. verse 4
If this was prohibited, why did Jesus do it and why did He allow Peter, James, and John to witness it?
If they appear to you then talk to them. But only if you happen to be with Jesus at the time and He is talking to them. Otherwise it doesn’t apply to you, the necromancy verses apply.