Hi Sevla,
The cutover process for SAP PP:
a) You can assume that whatever which was in production before the blackout is finished and is in stock, thus you can create inventory for these expected receipts from these production orders and once the SAP Go lives after the Black out period you would avoid recording SAP transactions for the production orders which were already assumed to be finished and were already brought in to inventory or as an option number 2, you can assume the real time production order status thus creating all the production orders in the blackout period and confirming them till the operation they are produced before the blackout period, this second strategy would be a true picture of your shop floor. The option number 1 is simpler and avoids all the complexities and uploading of SAP open production orders.
b) a) Upload all the Assemblies/Subassemblies Stocks as SAP inventory using the 561 Movement type. If certain stocks are in quality you can move it to Quality Inspection stocks too. Similarly if they are in blocked stock you can also upload in blocked stock in SAP.
Best Regards,
Amit Kataria