Marcio,
Any pilot will know that landing with a reverser locked is different from landing with the two operating. It is a variant, a special situation.
No. The flare is exactly the same.
before Airbus recommended to move the TL on the reverser working to idle and then to Rev. Move the TL on the locked reverser to Idle, period.
No, this is not what it is. As Lemurian said, "Only in your dreams".
The procedure during flare is, always was, and always will be, and has never been changed:
Move
BOTH thrust levers to idle.
At the same time.
Together.
"As one."
Regardless of the state of any thrust reversers.
Completely independent of that is the procedure for what to do about reverse thrust after touchdown. In case of one locked-out thrust reverser, the procedure on touchdown has been to select reverse on the engine with the working reverser only.
There never was a procedure mentioning separately what to do with both thrust levers in the flare, as you keep implying. ("Move one to idle, Move the other to reverse." No!)
Bernd