The Barclays-issued AAdvantage cards are officially converting to Citi on April 24, and Citi just published the full playbook — including new cards with new account numbers and a no-login window April 24–26.
The sleeper detail is that for now your existing card’s legacy perks stay in place while you also pick up the standard Citi-version benefits, creating a temporary stacking window (especially valuable for Aviator Silver moving to Globe).











