diff --git a/src/main/java/extension/tools/GPresetExporter.java b/src/main/java/extension/tools/GPresetExporter.java
index 4a64129..a39d2b6 100644
--- a/src/main/java/extension/tools/GPresetExporter.java
+++ b/src/main/java/extension/tools/GPresetExporter.java
@@ -382,6 +382,7 @@ else if (classname.startsWith("wf_slc_")) {
                             oldLocation.getX() - x,
                             oldLocation.getY() - y
                     ));
+                    b.setAltitude(b.getAltitude() - lowestFloorPoint * 100);
                 }
             });
             allAdsBackgrounds.forEach(a -> {