单位C转化为单位A（包括建筑物。）；这个语句有发现新的BUG

			<Effect type ='TransformUnit' toprotoid ='Minuteman' fromprotoid ='TradingPostCounter'></Effect>

将这个单位转换成民兵后，没有了视野，研究教堂的单位视野+2科技后，恢复正常。

	<Unit id ='1544' name ='TradingPostCounter'>
		<DBID>2223</DBID>
		<DisplayNameID>81014</DisplayNameID>
		<EditorNameID>81015</EditorNameID>
		<ObstructionRadiusX>0.00</ObstructionRadiusX>
		<ObstructionRadiusZ>0.00</ObstructionRadiusZ>
		<FormationCategory>Ranged</FormationCategory>
		<MaxVelocity>4.5000</MaxVelocity>
		<MaxRunVelocity>6.0000</MaxRunVelocity>
		<MovementType>air</MovementType>
		<TurnRate>18.0000</TurnRate>
		<AnimFile>effects\projectiles\musket_ball.xml</AnimFile>
		<Icon>ui\techs\hc_greenwich_time\hc_greenwich_time</Icon>
		<ImpactType>Flesh</ImpactType>
		<PhysicsInfo>dude</PhysicsInfo>
		<InitialHitpoints>90.0000</InitialHitpoints>
		<MaxHitpoints>90.0000</MaxHitpoints>
		<LOS>0.0000</LOS>
		<ProjectileProtoUnit>Arrow</ProjectileProtoUnit>
		<UnitAIType>RangedCombative</UnitAIType>
		<TrainPoints>1.0000</TrainPoints>
		<UnitType>EmbellishmentClass</UnitType>
		<UnitType>TestClass</UnitType>
		<UnitType>Unattackable</UnitType>
		<Flag>CollidesWithProjectiles</Flag>
		<Flag>ApplyHandicapTraining</Flag>
		<Flag>CorpseDecays</Flag>
		<Flag>DontRotateObstruction</Flag>
		<Flag>ObscuredByUnits</Flag>
		<Flag>Tracked</Flag>
		<Flag>Wanders</Flag>
		<Flag>NotSelectable</Flag>
		<Flag>DoNotShowOnMiniMap</Flag>
		<Flag>NeverCountDeathAsLoss</Flag>
	</Unit>