for access sequent pricing (key combination) in VK11 i'm has been changes (pic1), so every user create document SO export outomatic the prices will be taken from top the access sequent, and system will be taken at the next lower level if upon which no price condition.
for this case if you check in VK12 (pic2) the valid to for some material 01-09-2016 (expired), so if you want to price the material appear with price USD 7,20 you must changes the validity.