Hi!
From what I understand you just want to rotate it for the simulation but not in the design, presumably because it's some form of assembly? If this is the case you can do that within the simulation environment! When you click the new study dialogue there is the option to simplify the model prior to creating your simulation. By doing this you'll be able to rotate the part within the SimEnv without causing any change in the design. The attached image shows where the icon can be found!
Hopefully this helps, if you've got any further questions let me know! And if it is what you're looking for then please mark this as a solution so others can find it too!
Cheers,
Peter
Peter Simpson
Technical Consultant