According to this you can retain all your gil if you make a world transfer from a congested server to one less congested. I am trying to transfer from Balmung to Cactaur...but process still tells me 'Your character has exceeded the maximum gil amount allowed by the World transfer service.'

I'm not hitting 'yes' until I have confirmation I'm keeping my gil. With the way Early Release is (not) working, I'm hesitant to believe this is working as intended to. Will be cross if I lose all my money and find I'm on cactaur with just 1,000,000 after promised it wouldn't be.