Duravit sink/Removing Pre-punched holes

[kingdoon]

Please help. I purchased a Duravit Duraplus Bora wall-mounted sink online. The pre-punched holes came intact. (I only recently learned that any attempt to remove them voids the warranty.) In any case, I need to proceed with bathroom remodel and cannot wait for replacement. Does anyone have any experience removing such pre-punched holes. Kindly advise.