【2021.7 更新 2】DDG 联系了客服，得到了确认，这里的 previous 确实指的是之前的普通版 Platinum 卡，而不是其他类型的 Platinum 卡。
‘previous’ means previous versions of the same Platinum Card. The co-branded Platinum cards are considered different products. So if you aren’t flagged for other criteria (e.g. gaming behavior) , you would still be eligible for the welcome bonus.”
【2021.7 更新】根据 DOC 中一个评论的 data point，有人已经拿过普通版 Platinum 的奖励，在 term 更改之后，又申请了 schwab 版的 platinum，顺利拿到了奖励。看来这个新加的 term 只是限制同一个版本的白金卡的。
AMEX Platinum 系列卡今天进行了较大的改动，增加了年费，增加了多项福利。而白金卡的申请 term 中出现了这样一句话
Welcome offer not available to applicants who have or have had this Card or previous versions of the Platinum Card. We may also consider the number of American Express Cards you have opened and closed as well as other factors in making a decision on your welcome offer eligibility.
有的人理解为如果之前拿过白金卡，或者其他类型的白金卡（比如 schwab、摩根等），将拿不到这张新白金卡的开卡奖励。从我个人来说，我觉得如果他真的要禁止，应该学 citi ThankYou 系列、chase Marriott 卡那样，把冲突的卡名字列出来，说这 previous versions 太模糊了。
也许 amex 只是禁止了有过原 platinum 的申请新 platinum，有原 schwab 的申请 schwab 罢了。实际上 amex 如何操作，还是要看申请的人能否拿到奖励才能最终判断。目测这些卡的开卡奖励暂时不会变，大家不妨等等真实的 dp 再看。
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CITI thank You 系列的限制
Bonus ThankYou® Points are not available if you received a new cardmember bonus for Citi Rewards+®, Citi ThankYou® Preferred, Citi ThankYou® Premier/Citi Premier® or Citi Prestige®, or if you have closed any of these accounts, in the past 24 months.
Marriott 卡限制
Eligibility for this product: The product is not available to either: (1) current cardmembers of the Marriott Bonvoy™ Premier credit card (also known as Marriott Rewards® Premier) , Marriott Bonvoy Boundless™ credit card (also known as Marriott Rewards® Premier Plus) , Marriott Bonvoy Bold™ credit card, or
(2) previous cardmembers of the Marriott Bonvoy™ Premier credit card (also known as Marriott Rewards® Premier) , Marriott Bonvoy Boundless™ credit card (also known as Marriott Rewards® Premier Plus) , or Marriott Bonvoy Bold™ credit card, who received a new cardmember bonus within the last 24 months.
