8.75 rear end / axles bearings modification for disc brakes

Hi all

I’m installing a rear disc brake kit MDCDRD01
rear end is a 8.75 differential with 741 case housing
I’m ready to reinstall my rear axles with new no adjustable bearings WBK04
I would like to have confirmation for :
- Does the Inner housing axle seals need to be removed ?
- Does the two thrust buttons pinned together between the two axles need to be removed ?

Thanks
Lio