Originally Posted by
A321neo
If I got a comp up from Y to J on a TCON, can I use a BXP1 to further upgrade from J to F (assuming A availability)?
Technically no but I have had this happen with a waitlisted BXP1 where my complimentary upgrade cleared and subsequently the BXP1 cleared ~24 hours before departure. Downside was the dragon didn't allow me into FFD because she said it was an error that I got into F (which I didn't argue because it was).