1)
A330-300: no centre tank!
A380 pax - no centre tank!
A380 freighter - AI wants to talk FX, UPS etc. out of the centre tank...
2) There were times on the A330/A340 when main pumps on/off had an impact on the FQIS. This has been solved in the late 90s if I am correct.
However, some people still think you need to have the pumps off...
3) I am not an A320 expert. Donīt see a problem for the big Airbusses...
4) I am not a pilot...
Cheers,
J.V.