Expedite,
Thanks for the warning.
This is alarming and very dangerous ! Did anyone file any paperwork !
If the ops dept of said airline is saying that the new clearance COMPLETELY invalidates the previous one that means that they (A319) should have stopped descending immediately on receipt of the WELIN routing !!
Absolutely fukking barmy.
This is, without fear of contradiction, the most pinheaded interpretation of the rules I've ever heard.
Cheers
INS