What will happen to honor and bg marks earned during prepatch?

[Heartilly-stormscale]

PvP Weekly Honor Calculations Date and Time

If you continue in Classic Era, nothing changes. If you go to Burning Crusade Classic, pre-patch on May 19 takes you to version 2.5, in which the entire Honor system is revamped. Anything you earn in pre-patch will still be yours after Outland content unlocks on June 2.