it does, but far below notifiable amounts...
If you mix a C41 developer from a replenisher and a "Starter" solution, the replenisher itself will be free of iodide, all needed iodide (1.2mg/liter) comes from the starter.
So calculating it it down a whole liter of ”FLEXICOLOR Entwickler Starter CAT 1953009” contains only about 86mg of iodide. (1000/14)*1.2=85.7mg
This should be 0.0086 % in in weight...
(my german Flexicolor edition says 860ml of replenisher, 14 ml of starter and additional 126ml water give one liler working solution, these amounts may vary for other distributions...)