Yes, indeed it can be done. The file, of course is Civ4BuildInfos. The same editing applies ...
<BuildInfo>
<Type>BUILD_PLANTATION</Type>
<Description>TXT_KEY_BUILD_PLANTATION</Description>
<Help/>
<PrereqTech>TECH_CALENDAR</PrereqTech>
<iTime>500</iTime>
<bKill>0</bKill>
<ImprovementType>IMPROVEMENT_PLANTATION</ImprovementType>
<RouteType>NONE</RouteType>
<EntityEvent>ENTEVENT_BUILD</EntityEvent>
<FeatureStructs>
<FeatureStruct>
<FeatureType>FEATURE_JUNGLE</FeatureType>
<PrereqTech>TECH_IRON_WORKING</PrereqTech>
<iTime>400</iTime>
<iProduction>0</iProduction>
<bRemove>1</bRemove>
</FeatureStruct>
<FeatureStruct>
<FeatureType>FEATURE_FOREST</FeatureType>
<PrereqTech>TECH_BRONZE_WORKING</PrereqTech>
<iTime>250</iTime>
<iProduction>30</iProduction>
<bRemove>0</bRemove>
</FeatureStruct>
</FeatureStructs>
<HotKey>KB_P</HotKey>
<bAltDown>0</bAltDown>
<bShiftDown>1</bShiftDown>
<bCtrlDown>0</bCtrlDown>
<iHotKeyPriority>1</iHotKeyPriority>
<Button>,Art/Interface/Buttons/Builds/BuildPlantation.dds,Art/Interface/Buttons/Actions_Builds_LeaderHeads_Specialists_Atlas.dds,1,9</Button>
</BuildInfo>
The FEATURE_FOREST and FEATURE_JUNGLE are what remove the graphics. When changed to "0", the improvement can be built/pillage without the forest/jungle being removed.
Nice.
