Axes Convention in STAAD and Eurocode

Hi.

In STAAD, major axis is Z-Z and minor is Y-Y. However, in EC3, it's the other way around.

With this, I wish to have confirmation and ask what are the significant parameters to consider about the difference in sign conventions when doing STAAD using EC3?

Using EN1993-1-1:2005, should the parameters LY and LZ axes still be treated as how it is originally defined in STAAD (Z-Z as its major axis)?

When does the axes convention of EC3 should be taken into consideration?

Any guidance is highly appreciated.

Thank you very much.