Lee Jones, Cake manager, recently announced that Cake will let you transfer your gold cards, gold chips, and gold stacks from Players Only or Sportbook to the main Cake site. You just need to e-mail Cake support and give them your screen name details. Of course you need a Cake account first.
For those that haven't heard, they are giving 20 points per gold chip and a lousy 1 point per gold card when they switch to Merge on the 15th. I think the 20 points per chip is bad enough, but the 1 point per card is a damn joke. If any of you have any high number gold cards, I'd definitely get them transferred to Cake soon.