Alright, I've read on here that redeeming pre-orders on UK iTunes no longer helps a song climb on iTunes the day it's released and that we'd have to cancel it and purchase it on the day? Where are the official sources confirming this?
Previously, titles in preorder would be ranked at the time the orders were placed AND again when the orders were redeemed. Titles with large preorders would immediately fly to the top of the chart on Monday night once the iTunes Store was turned over for the week’s new releases. Under the new policy, redemptions will no longer contribute to chart position as the advance sales will be ranked only during the preorder period as orders accumulate. New releases will be ranked based solely on the day’s performance above and beyond preorder redemptions.
This is true. That's why songs used to shoot to #1 after midnight Sunday but now they climb up. It makes sense, because when you pre-order it, you're moving it up the iTunes chart as a 'pre-order', so why should you boost it AGAIN when you redeem it?