If you transfer the credit line to another existing card and apply to another Chase card in the future that requires more credit than they're willing to allocate new to you, they'll automatically pull credit from existing accounts to fund the new card. This happened when I had the CF, CSR, and Marriott cards and applied for IHG. I wasn't too happy that my form of notification was a letter in the mail a week after they'd already changed my credit lines (what if I had a big purchase planned on one of the cards), but it was easy to call in and reallocate the total across my accounts to my specifications.