RE: Repeal Obamacare and leave it at that.
What happens to those who have enrolled via the Exchanges?
The exchanges are going away sooner or later. Why not sooner?
the bigger point is that the entire insurance market would crash. Fortunately, Trump/Price have better ideas
Repealing itself? Only 4 of 24 Obamacare exchanges still open
There are only four exchanges still operating
Insurance policies, at least employer sponsored plans, are set up a plan year at a time. This allows employers to either continue with the current coverage, or opt to go with other coverage. That being typed, the exchange plans would still be in place for a year from the issue date. IE: Issue Date of 01/01/16 would (probably) be in effect from 01/01/16 to 12/31/16.
I hope this answers your question. Insurance and other employer-sponsored plans is what I do in real life.