Hi All, I had a problem last week where if I drew in context in an assemble. After saving the part in an external file. I could not edit the part as it automatically became a derived part. I was told to cut the references to the assemble and sure enough all was well. However, now if I draw a sketch in an assemble and try to use Weldments, the weldment profile has no references on it to be able to locate the profile. I can make a new drawing and use the same weldment profile and it has the reference points on it. Also when drawing in context I cant edit the sketch. If I try to change a dimension iit re locates the sketch to a different location in the assemble. I cant use any of the relations to locate the sketch!!! I have attached the files. If anybody can shed some light on this please. So on this assembly, part 21 is a sketch of a set of hand rails. I cant edit them or use the weldment location tool!