I say it has to stay. It's not correct without the plate.
https://img.bricklink.com/ItemImage/EXTN...iginal.png
Quote from Bricklink:
"The hinge plate is permanently attached to the underside of the tipper bed."
Design number is 19001, both with same colour plate and with grey plate.
https://brickset.com/parts/design-19001
https://img.bricklink.com/ItemImage/EXTN...iginal.png
Quote from Bricklink:
"The hinge plate is permanently attached to the underside of the tipper bed."
Design number is 19001, both with same colour plate and with grey plate.
https://brickset.com/parts/design-19001