When assembly is opened & Parts are opened by "Open".
Only "Save Copy As" options is displayed where as "Save As" is not displayed.
Solution If we open the part/ sub-Assembly in edit mode then the part/ Sub Assembly document opened in the same container so we allow both option Save Copy As and Save As.
And if we opened the same by "Open" then part/ Sub-Assembly document is in another window and container is in another so we allow only Save Copy As.
Notes and References 9172359
Hardware/Software Configuration Platform: INTEL
OS Version: 764