Another data point...
US Air card #1: opened Oct. 28 2014
credit line was raised when I closed my Arrival+ and re allocated the A+ CL to the US.
Called March 27 to lower CL to the amount I got upon approval ($12.5k)
Applied for US #2 on March 28 2015. Instantly approved for $12.5k CL. And this is with inputting my Dividend Miles #. Phew. Was worried I'd missed out on this...
Logged into my account and immediately see my old acct # with the new Aviator card, and the new card with the legacy US card.
