From Valve Developer Community
"Any entities which are within the trigger_transition brush volume will then go to the next map."
- I don't see why not.
report_entitiesshould be helpful in determining that. Pinsplash (talk) 12:22, 2 August 2018 (UTC)
logic_relayis descended from CServerOnlyEntity, which is not transferred across level transitions. I haven't tested this, but you can try parenting it to a physical entity like the player or an NPC. Turn SmartEdit off and use "parentname" or just the "SetParent" input. --Blixibon (talk) 16:00, 2 August 2018 (UTC)