(11 Jun 2017, 8:30 pm)South Tyne Lad wrote I'm lead to believe that the current X21/22 E400's will all be repainted into New Sapphire/Premium Livery ( The Livery that the new MMC's will be in ) Once displaced, Which could explain the lack of tidying up of the current branding.
Also once the New MMC's are in service, It will be likely that all repaints from then on will be in the new Corporate/Variant's, As all current brands will then be Out of date, Or atleast Sapphire and Interurban will be, MAX will stay strong for the near future.
MAX is going, hence the MAX spec vehicles that have been built at ADL are in allover teal.
The reason for the lack of tidying up on the Sapphires regarding vinyls, is the call-out cost for the contractor and the cost of producing vinyls, there's also the time that the vehicles have to be VOR and parked in the wrong part of the depot, which causes disruption when services begin in the morning.