I have uploaded a screenshot from my game state.
This is at the Enclave Outpost nearest Jury Street Metro Station.
The Enclave Soldier's Reference ID is 060C18CE and his Base ID is FF002586. (06 = Fallout3.ESM)
The Deathclaw's Reference ID is 060C18B3 and its Base ID is 000BCC4D (00 = FalloutNV.ESM)
There appears to be a mismatch between the faction allegiances.
The Enclave Soldier's factions are listed as
FormID 448D1, Editor ID: MS13CanMez, Name: MS13 Can be Mezzed with Mesmetron
and
Form ID: 1D3FD, Editor ID: EnclaveFaction, Name: Enclave
Whereas the Deathclaw's factions are listed as
FormID: 7e274, Editor ID: CreatureHitDeathClaw, Name: <noname>
and
FormID: 9003895, EditorID: DLC03EnclaveDeathclawFaction, Name: DLC03 Enclave Deathclaw Faction (09 = BrokenSteel.ESM)