e.g. I might do a copy of Form, which might have the Name 'New Memo' and the Alias 'Memo'
Now the copy Has the Name 'Copy of New Memo' but still the same alias (so we do have a doublicate alias now...
=> A lot of concepts would break if a doublicate in List of aliases (or names) of the design element would not be allowed, however, if, triggered by the same conditon the name does change when pasting, a new alias would be set, too, this would be helpflul.
(If there is no alias, leave it empty for the pasted copy, too).