If I already had an earlier version and requested my free earlier version license, why do you send my same earlier version serial number again instead of a second one (Embarcadero)?

If I already had an earlier version and requested my free earlier version license, why do you send my same earlier version serial number again instead of a second one?

Your earlier version license, and the version you upgrade to, are considered one named user license that covers both versions. If you already own an earlier version and go to the web page and request the same version license, you will just get a re-send of your existing serial number.