A Forwarding Logic-Locked Minting Policy (FLLocked MP) is a Minting Script parametrised with a Script Address (Home Address or HA).

HomeAddress          = Hash ValidationScript 
FLLockedMintigPolicy = HomeAddress -> MintingPolicy

The unique property of a FLLocked Minting Policy is that it only validates transactions which mint tokens sent to the Home Address. This guarantees that the Handling logic of the tokens is done by the Home Script.

Use case

Usually Come and Go Proof Tokenss make use of such forwarding Logic-Locked Minting Policies.

Unique FLLocked

A Unique Forwarding Logic-Locked Minting Policy (u_FLLocked MP_) is a FLLocked MP further parametrised by the state of a unique Come and Go Proof Tokens which must be present in the minting/spending transaction for both the Home Script and u_FLLocked MP._

State       = Active | Consumed 
uniqueToken = AssetClass
CnGToken    = (state : State) -> AssetClass -> CnGToken state

HomeAddress = Hash ( uniqueToken ->  ValidationScript ) 

uFLLockedMintigPolicy = uniqueToken -> HomeAddress -> MintingPolicy

The logic of Minting Tokens with the u_FLLocked MP_ is now determined by the state of the CnG PToken and so is their subsequent use/unlocking of host UTXo from the Home Script address.