Just been told by a customer representative that we can no longer transfer to SPG.
I asked when this was communicated with customers and she said that SPG had been communicating this, ah no they have detailed when the merge will happen but have not said partner transfers can not take place during this time, AMEX should have advised of a date when they received. Oh well I'm sorry about that, bit late now isn't it .
Very poor from Amex. I would escalate it to the point that they either allow the transfer to happen or provide some form of compensation, i.e. bonus MR points.