Hello Christopher,
Depending on how the upgrade was completed will depend on the outcome.
A new upgrade of any operating system can change the registraiton of the product.
For example, changing IP address, domain or machine name will be treated as a new installation.
Therefore a upgrade of operating system, will likely do the same.
There is no reason to be concerned if a registration is required, simply register using the same EDN account as before and the registration will work. If you have any issues such as the registration limit being reached then you can log a free support case via
support.embarcadero.com/forms
Regards
Peter Manning
Embarcadero Technical Support