I'm not in NY but tried to follow it.
The law that was recently passed said no mags over 7 rounds, and any mag over 7 rounds would be completely banned one year after the law went into place, the owners of these mags can sell them out of state up to that one year mark. After the one year a person would be arrested on a felon count if they have a mag that will hold over 7 rounds.
So that law didn't allow any grandfathered mags.
Then I heard a judge put a freeze on the new law because it wasn't constitutional.
Haven't heard anything else after that.