What is reconstruction? It's like removing an operating system to replace it with another. For example, WinPE 28000.1 > EnterpriseG 28000.1 is impossible; the EnterpriseG edition doesn't exist. So everyone just takes the Pro version and installs it as EnterpriseG, which is pointless (like trying to fit a Citroën 2CV with a Ferrari steering wheel). You can rebuild without editing, package by package (e.g., see the TXT file). There's no problem with the language pack.