I'm having problem saving different versions of the same assembly. For example a house with components in different positions. I tried save as and naming it something else, but every time I open up one assembly and modify it, it automatically changes the other assembly to how the first one is. I know this is probably just something small that i'm missing and I think I got it to work once before, but I don't remember what I did. I searched on google but I didn't know how to word the problem. Is there a way to stop an assembly from updating another assembly file you have of the same assembly so you can have multipul versions of the same assembly with components inside in different positions?