MintAndBurnTokenManager (and possibly others) do not revert when you ask them to transfer to an unknown destination.

[rrw-zilliqa]

When we're asked to transfer tokens, we look up the remote token address in our lookup table. If the table doesn't include an address, we get 0x0 and attempt to transfer tokens to address 0x0 on the remote chain.

Two problems - first, this will credit native tokens if the chain id exists. Second, it will eat the source tokens.