Weird/Odd. Got and activated a new CC with its same numbers and new expiration date, but spectrum.net's account shows its expiration date already updated. Huh? Uh, is that normal? Usually, they have to be done manually. :/
Thank you for reading and hopefully answering soon.
Most of mine are updated automatically if it's the same card number.
Thank you for confirming. This was the first time. All previous updates were done manually.
Here's a thought: If you authorize Spectrum to transfer your bill to your credit card account each month, the bank who services that card will automatically update the card expiration date back to Spectrum, the debiting entity. As you've already discovered, everything else on your card remains the same, including the "secret security" code.
I'll bet that your credit card banking agreement says in the fine print that the card servicer will do the same for all of your electronic payments until you, the card owner, either cancel the direct payment agreement or change the credit card account.