You'll probably have to create a new 433 remote, make sure all your hard buttons that are Global on the Zigbee T2-C are also set to Global on the new 433 T2-C, then go to File/Merge Pages, then select "another device in this system", then Select All, then OK. 

Your 433 remote should be identical to the Zigbee one.  I haven't done this, so I can't confirm that there isn't some buggy behaviour.  You should try it and go through the new remote programming with a fine tooth comb to find any errors.