I expect this question has been answered before but I'm not able to bring the answer up in a search. I do recall SH posting some time ago about accruing miles to various Star airlines while flying on another and still doing things like upgrading, but I can't find his posts on that.

I am looking to accrue miles to another Star airline's program but I still want to benefit from the current year's E benefits. If I want to, say, use my eupgrade credits on an AC flight but I use another airlines ff number, will there be an issue with that? For some things (like using the lounge) I can see that it will be easy to simply show my AE card, but in cases where the E status could be noted on the BP I wonder if showing the card will be sufficient (e.g., using a premium security line)?

Am I right that if I do OLCI with my AE number I can print a BP with my E status on it I can go back and reprint with the other ff number on it?