preserve

this is better as we're preserving everything about the previously
passed atom modulo any renames

lib/_emerge/depgraph.py

@@ -6952,8 +6952,9 @@ def _iter_match_pkgs_atom(
                         found_match = True
                         matched_something = True
 
+                        atom = Atom(atom.replace(source, dest))
                         yield from self._iter_match_pkgs_atom(
-                            root_config, pkg_type, dest, onlydeps=onlydeps
+                            root_config, pkg_type, atom, onlydeps=onlydeps
                         )
 
         # USE=multislot can make an installed package appear as if