Originally Posted by
Zorak
There are three data points in the four most recent posts above yours
your card retains its original (pre-upgrade) anniversary date, which is also when the $300 credit resets.
Thanks! It wasn't clear since the pro-rated annual fee just posted. Good to know that I have until my original renewal date to use the $300 credit though it will be sooner anyway and it'll reset again at that time.