Activation Limit Reached

We want to move Designer 12 to a new computer, the old one has been sold and the software removed, but we keep getting the "Activation Limit" reached on trying to register the product.  Since we update computers every year and we've owned Corel Designer 12 since 05, it seems like Corel arbitarily decides how long you can use your own purchased product.,

Is there a way around this?

It would appear that Corel needs an automatic deregistration system like most cad programs have, or else should allow only one active product at a time, like other cad products do.  Thoughts?