At the very least, a new bath token should have the same underlying to make sure funds can be taken out
There is 1 instance of this issue:
https://github.com/code-423n4/2022-05-rubicon/blob/8c312a63a91193c6a192a9aab44ff980fbfd7741/contracts/rubiconPools/BathHouse.sol#L216-L229
