There are several books and professional papers that confirm hieratic and hieroglyphic writing developed on separate tracks. Of course, common features of hieratic and hieroglyphic numeral symbols exist, but as a rule, the two forms of numbers were based on different numeration metaphors.
Tanja Pemmerening in her PhD thesis, as referenced on:
1. "Altjioagyptische Holmasse Metrologish neu Interpretiert" and relevant phramaceutical and medical knowledge, an abstract, Phillips-Universtat, Marburg, 8-11-2004, taken from "Die Altagyptschen Hohlmass" in studien zur Altagyptischen Kulture, Beiheft, 10, Hamburg, Buske-Verlag, 2005
shows that the 1/64 hieratic symbol, used in weights and measures, was closely related to the 'healed' hieroglyphic 1/64 symbol. One implication of this fragment concludes that the rounded-off binary hieroglyphic numeration system, that threw away a 1/64 unit, was exactly corrected in hieroglyphic and hieratic script when 'healed' by the 1/64 dja unit.