Change WordPress user roles and capabilities › Forums › Bug Reports › Roles no longer pushed to subsites on MultiSite › Reply To: Roles no longer pushed to subsites on MultiSite
15/03/2021 at 02:18 #7421
Generally, it should work with new version. Custom roles and capabilities are will be in place.
4.5.1 was so long ago though. Max. problem you may meet – to re-configure manually the settings for some add-on, like “Admin menu access”.