Index: binaries/data/mods/public/simulation/helpers/Transform.js
===================================================================
--- binaries/data/mods/public/simulation/helpers/Transform.js
+++ binaries/data/mods/public/simulation/helpers/Transform.js
@@ -73,6 +73,8 @@
 				cmpNewUnitAI.SetGuardOf(guarded);
 			}
 		}
+		if (cmpUnitAI.IsGarrisoned())
+			cmpNewUnitAI.SetGarrisoned();
 	}
 
 	let cmpPromotion = Engine.QueryInterface(oldEnt, IID_Promotion);