Tranfering from prefered to non prefered servers.

[Ashgarth]

Yup, and if they are on a preferred server they won't be able to take advantage of the free transfers as it locks them in place for 90 days.

For a period of approximately two weeks following the implementation of each new Data Center, all characters on affected Data Centers will be able to transfer Worlds at no cost.

This would make people assume that all characters means all characters.