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I have two similar subassembly in the windchill with two different name. This two subassembly used in two different projects. how I can merge it has one subassembly and to be used in two places.
As per my knowledge there is no any way to Merge 2 CAD files.
As a workaround you can rename one of sub-assembly as obsolete and update 2 projects with remaining sub assembly. You can purge this project data to remove the older sub assembly reference.