Hello group, I want to rename an assembly, but i lost all the feature part references. For example, i have the assembly file 01xxx_000_000_A and i want to rename it in 01999_000_000_A. I can do this with the save as command. Now i can open the assembly 01999_000_000_A and solidworks find all the parts that are be connected with this assembly. Only the features of the parts reference of 01xxx_000_000_A shown up in the featuremananger with e.g. Cut-Extrude1->? I think that i do something wrong. Can anybody help me out to do this the correct way. Thanx Mike