Whether this is right or wrong we have a cast in place insert that was derived in the cast part.  Now we have multiple castings that use this insert.  Just for fun, we have multiple insert part files in different folders, with cast parts using different versions of the insert.   It appears I cannot replace the inserted part by replacing like you would in an assembly.  How do I go about replacing the inserted part in the assemblies so that only one file is used?

Thanks