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It's been posted that Capital One isn't currently offering Savor or SavorOne upgrades. When the first version of the Savor came around, upgrades weren't offered either. But after five or six months, Capital One started offering them like candy. I'd bet that Capital one will start offering Savor and SavorOne PCs in a few months.
Don't you forfeit the sign up bonuses with a PC?
Right. You forfeit the sign-up bonus when product-changing. But in this case, the OP is looking to make a useless card useful rather than adding a new card.