Maybe, but I wouldn't rely on that, if Airbus does not say we can.
I am familiar with the schematic system, only, I donīt know how the real piping is. From the schematics, it seems difficult to me that there would be the same fuel pressure in the high wing than in the low one, even if both are below the level of the tank.
Anyway in the 320 it would be like you said. Wait until fuel is deaereated, then do the procedure.
cheers