This was so funny, I was laughing my head off. So they are Bahai's but officially, they are just a dash.
But more amusingly, I quote:
In a related case involving Egyptians who have returned to Christianity after having been declared Muslims at some point in their lives, the Ministry has decided to enter "formerly declared Muslim" on their ID cards that will be issued stating that they are currently "Christian."
So this would be Christians who became Muslims who became Christians and are now formerly declared Muslims? What if one of those become Bahai? Would that be now Christians who became Muslims who became Christians and are now formerly declared Muslims but now are just a Dash? Reminds me of that artist formerly known as Prince.
Truly these states should get out of the business of defining and working with religion otherwise they end up being laughing stocks.