You have to remove the unwanted 270 from the database, delete the pocket clock from the members personal information and then add the pocket clock to the member as if it was a new pocket clock. The best way to delete the 270 is to sort by ring number and shift/click batches of older birds then right/click and delete. When you get down to penny numbers change the colours of the ones you want to delete to something obscure like mosaic. When you have done this sort by colour and shift/click all the mosaics, right/click and delete. And the members think you have nothing else to do???