| BCH chain, that wallet should be empty, when you flip to ABC chain it will show coins.
NOTHING CAN GO WRONG WITH THIS METHOD BECAUSE YOU ARE MAKING TX FROM YOUR WALLET TO THAT SAME
| WALLET THEY EITHER HAPPEN OR THEY DON'T. ZERO RISK AT COIN LOSS. You can try splitting with this method as much as you want it will only cost you tx fees.
| SLP tokens I don't know. When satoshis are locked up in SLP tokens they can't be send so I have no idea how to split them. Of course on the ABC chain they are no longer called