97-98 don't require a license to tune them which is why it doesn't show a used license for it, they are free. Your new 99+ PCM does require a license like you said. The way you license is by trying to flash in the new tune and it will recognize that you have not licensed this pcm,
and then it will close out the flashing utility and open the licensing prompt where it will ask you if you want to license to this PCM to your flashscan v1 and you just tell it yes and confirm and it will license to your cable. Then you can flash as much as you want.