【2024.2 更新】現在AmEx Green也加入了。在 AmEx Green 的頁面上寫着，有過 Gold或Platinum 將無法獲得開卡獎勵。HT: 美卡論壇 mous。
【2023.12 更新】現在Marriott系列也加入了。在 AmEx Marriott Bevy 的頁面上寫着，有過 Brilliant 將無法獲得開卡獎勵。
【2023.10 更新】最新加入限制的是 Amex Everyday Preferred (EDP) 和 Amex Everyday (ED) 系列。因為 EDP 有年費而 ED 無年費，所以之後持有過 EDP 卡將無法獲得 ED 卡的開卡獎勵。
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運通限制同系列開卡獎勵
這絕對是一大噩耗。AmEx 最近新增了開卡獎勵限制條款：同系列內的卡也將互相影響開卡獎勵了！
以前大家熟知的開卡獎勵限制是：正在持有，或已經持有過某張卡，將無法再獲得此卡的開卡獎勵。這個限制只針對單卡，對同系列其它卡沒有影響。
但是最近大家發現開卡獎勵的限制開始擴展到同一個系列的卡內：持有過某張卡後，不僅之後無法再獲得這張卡自身的開卡獎勵，同系列內比它年費更低的卡的開卡獎勵也將無法獲得。
目前還沒有擴展到所有 AmEx 卡上，但看起來也是遲早的事。本帖會持續更新用於匯總當前哪些 AmEx 信用卡已經加上了這條限制。
已受影響的系列卡
目前加入的都是個人卡系列，商業卡全部還未受影響。根據這個速度，接下來一兩個月應該所有會被限制的系列卡都會逐漸加上限制條款。
Marriott 系列【2023.12 最新加入】
Marriott系列也加入了。
- AmEx Marriott Bevy 的最新條款，現在寫着有過 Brilliant 將無法獲得開卡獎勵：
You may not be eligible to receive a welcome offer if you have or have had this Card, the Marriott Bonvoy Brilliant® American Express® Card or previous versions of these Cards.
Everyday 系列【2023.10 開始】
Everyday 系列也有類似的條款了：持有過 Everyday Preferred 將無法獲得 Everyday 卡的獎勵。
- Amex Everyday (無年費) 最新的條款，清楚表明有過 Everyday Preferred 將無法獲得獎勵：
You may not be eligible to receive the welcome offer, intro APRs, and intro plan fees if you have or have had this Card, the Amex EveryDay® Preferred Credit Card or previous versions of these Cards.
- Amex Everyday Preferred ($95年費) 的條款，和以前相比無變化：
You may not be eligible to receive the welcome offer, intro APRs, and intro plan fees if you have or have had this Card or previous versions of this Card.
Amex Green & Gold & Platinum【2023.10 開始】
運通白金卡、金卡和綠卡現在也有同系列限制了，持有過白金卡將無法獲得金卡的獎勵。Green 卡目前還沒有被影響【更新】2024.2 起Green也加入了限制。
- AmEx Green（$150 年費）最新的 offer terms，清楚表明有過白金（各種版本的都算）或Gold將無法獲得 Green 卡的獎勵:
You may not be eligible to receive a welcome offer if you have or have had this Card, the Platinum Card®, the Platinum Card® from American Express Exclusively for Morgan Stanley, the Platinum Card® from American Express Exclusively for Charles Schwab, the American Express® Gold Card or previous versions of these Cards. You also may not be eligible to receive a welcome offer based on various factors, such as your history with credit card balance transfers, your history as an American Express Card Member, the number of credit cards that you have opened and closed and other factors. If you are not eligible for a welcome offer, we will notify you prior to processing your application so you have the option to withdraw your application.
- AmEx Gold（$250 年費）最新的 offer terms，清楚表明有過白金（各種版本的都算）將無法獲得 Gold 卡的獎勵:
You may not be eligible to receive a welcome offer if you have or have had this Card, the Premier Rewards Gold Card, the Platinum Card®, the Platinum Card® from American Express Exclusively for Charles Schwab, the Platinum Card® from American Express Exclusively for Morgan Stanley or previous versions of these Cards.
- AmEx Platinum（$695 年費）的 offer terms。白金卡有各種版本，持有過一種將無法獲得其它白金卡的獎勵。持有過Gold並不影響Platinum。
You may not be eligible to receive a welcome offer if you have or have had this Card, the Platinum Card® from American Express Exclusively for Charles Schwab, the Platinum Card® from American Express Exclusively for Morgan Stanley or previous versions of these Cards.
Blue Cash 系列【2023.10開始】
Blue Cash 系列也有類似的條款了。持有過BCP影響BCE，反過來不影響。
- AmEx Blue Cash Everyday (BCE)（$0 年費）的 offer terms：
You may not be eligible to receive the welcome offer, intro APRs, and intro plan fees if you have or have had this Card, the Cash Magnet®Card, the Blue Cash Preferred® Card, the Morgan Stanley Blue Cash Preferred® American Express Card or previous versions of this Card.
- AmEx Blue Cash Preferred (BCP)（$95 年費）的 offer terms：
You may not be eligible to receive the welcome offer, intro APRs, and intro plan fees if you have or have had this Card, the Morgan Stanley Blue Cash Preferred® American Express Card, or previous versions of these Cards.
Delta 個人卡系列【2023.9開始】
AmEx Delta 系列卡按照年費從低到高排序，持有過高年費的將無法獲得低年費版本的獎勵：
- AmEx Delta SkyMiles Blue 信用卡（$0 年費）：持有過 Blue, Gold, Platinum, Reserve 卡都無法獲得獎勵。
You may not be eligible to receive a welcome offer if you have or have had this Card, the Delta SkyMiles® Options Credit Card, the Delta SkyMiles® Gold American Express Card, the Delta SkyMiles® Platinum American Express Card, the Delta SkyMiles® Reserve American Express Card or previous versions of these Cards.
- AmEx Delta SkyMiles Gold 信用卡（$99 年費）：持有過 Gold, Platinum, Reserve 卡將無法獲得獎勵。
You may not be eligible to receive a welcome offer if you have or have had this Card, the Delta SkyMiles® Platinum American Express Card, the Delta SkyMiles® Reserve American Express Card or previous versions of these Cards.
- AmEx Delta SkyMiles Platinum 信用卡（$250 年費）：持有過 Platinum, Reserve 卡將無法獲得獎勵。
You may not be eligible to receive a welcome offer if you have or have had this Card, the Delta SkyMiles® Reserve American Express Card or previous versions of these Cards.
- AmEx Delta SkyMiles Reserve 信用卡（$550 年費）：沒有變化，和以前一樣，持有過 Reserve 本身才有影響。
You may not be eligible to receive a welcome offer if you have or have had this Card or previous versions of this Card.
Delta 商業卡系列目前還沒有受影響。
一些討論
看起來運通正在逐步鋪開這種同系列的限制。以後就是持有過高年費版都無法獲得更低年費卡的獎勵。對想全部拿一次獎勵的人來說，申卡的順序就非常重要了，以前無所謂，之後必須從低年費開始，逐次申到高年費版。而且這個條款是回溯性質的，不是從更新後新申卡開始執行，而是發佈後以前持有過的也算，所以大家要早做準備。
同時，值得提醒的是，不同渠道、不同鏈接的卡對應的 offer terms 可能是不一樣的，就像是有的卡沒有 once per lifetime language 一樣，或許之後也會有這類沒有 once per lifetime family language 的鏈接出現，大家申請前一定要仔細查看條款。