Arweinwyr yr awdurdodau lleol yng Nghyd-bwyllgor Corfforedig y De-ddwyrain a ofynnodd am y newid hwn er mwyn rhoi mwy o amser iddynt fynd i’r afael â materion technegol sy'n dod i'r amlwg mewn perthynas â rhoi trefniadau ar waith cyn i'r tair swyddogaeth graidd ddechrau.
This amendment was requested by the local authority leaders in the South East Wales CJC in order to provide more time to address emerging technical issues in relation to implementation before the three core functions commence.