SafetyDude From United States of America, joined Sep 2001, 3795 posts, RR: 16 Reply 1, posted (11 years 12 months 3 days 12 hours ago) and read 2258 times:
My guess is that there is something different between the two.
Or possibly they needed more so what they did they did a new date so they could look for the old ones and replace them.
I alwayskeep my cards unless I have an absolute duplicate.
I would suggest keeping both.