Parts of different types aren't expected to be convertible to one another. Such conversion will usually be lossy. Remove the dropdown for changing part type.
Type changes should be restricted to either nothing, or to Code type (new part's Code = old part's Impl).
Parts of different types aren't expected to be convertible to one another. Such conversion will usually be lossy. Remove the dropdown for changing part type.
Type changes should be restricted to either nothing, or to Code type (new part's Code = old part's Impl).