Simulation with 3 PO

Hello,

 

I have a manufacturing  with 3 PO, OP10 and OP20 with a lathe , OP30 with CU 5 axes. The first two work well, with the activation of the intermediate stock, but I have problems with the third one, with CU 5axes simulation. The simulation starts from the correct stock when we launch the operation, but if we launch the simulation on the program, I do not have access to the stock of the previous phase and an encompassing stock is created. Have you a solution ? Thank