No can do. Transferring boxes, much like opening boxes, is an all-or-nothing thing.
Yes, Rollup happens when you hit 'Open Boxes' on your interface, but before the boxes manifest. The way it goes is:
- Roll Bronze boxes into Silver
- Is Rollup at least level 2? If yes, roll Silver boxes into Gold. Else, manifest boxes
- Is Rollup at least level 3? If yes, roll Gold boxes into Platinum. Else, manifest boxes
- etc
At each level, it rolls up the appropriate boxes at the rate for that box type:
- Bronze x2 becomes Silver
- Silver x4 becomes Gold
- Gold x4 becomes Platinum
- Platinum x8 becomes Legendary
- Legendary x8 becomes Celestial
If you don't have enough boxes at a given level then the excess will not be affected, but the process will still continue. Therefore, if you initially have:
9 Bronze
1 Silver
3 Gold
When you use Rollup, the process will go:
9 Bronze => 4 Silver + 1 Bronze
1 Silver + 4 Silver + 1 Bronze => 1 Gold + 1 Silver + 1 Bronze
3 Gold + 1 Gold + 1 Silver + 1 Bronze => 1 Platinum + 1 Silver + 1 Bronze
You will then manifest and have to open:
1 Platinum + 1 Silver + 1 Bronze
When you open boxes, all of them manifest and you must open all of them. Also, boxes cannot be traded or looted.
