diff --git a/com.avaloq.tools.ddk.xtext.export/META-INF/MANIFEST.MF b/com.avaloq.tools.ddk.xtext.export/META-INF/MANIFEST.MF
index 2f1495a0a..f60522c69 100644
--- a/com.avaloq.tools.ddk.xtext.export/META-INF/MANIFEST.MF
+++ b/com.avaloq.tools.ddk.xtext.export/META-INF/MANIFEST.MF
@@ -38,6 +38,7 @@ Export-Package: com.avaloq.tools.ddk.xtext.export,
  com.avaloq.tools.ddk.xtext.export.formatting,
  com.avaloq.tools.ddk.xtext.export.serializer,
  com.avaloq.tools.ddk.xtext.export.generator,
- com.avaloq.tools.ddk.xtext.export.jvmmodel
+ com.avaloq.tools.ddk.xtext.export.jvmmodel,
+ com.avaloq.tools.ddk.xtext.export.resource
 Automatic-Module-Name: com.avaloq.tools.ddk.xtext.export
 Import-Package: org.apache.log4j
diff --git a/com.avaloq.tools.ddk.xtext.export/src/com/avaloq/tools/ddk/xtext/export/ExportRuntimeModule.java b/com.avaloq.tools.ddk.xtext.export/src/com/avaloq/tools/ddk/xtext/export/ExportRuntimeModule.java
index 3cb93e319..1bfef7134 100644
--- a/com.avaloq.tools.ddk.xtext.export/src/com/avaloq/tools/ddk/xtext/export/ExportRuntimeModule.java
+++ b/com.avaloq.tools.ddk.xtext.export/src/com/avaloq/tools/ddk/xtext/export/ExportRuntimeModule.java
@@ -13,12 +13,14 @@
 import org.eclipse.xtext.formatting.ILineSeparatorInformation;
 import org.eclipse.xtext.generator.IOutputConfigurationProvider;
 import org.eclipse.xtext.naming.IQualifiedNameConverter;
+import org.eclipse.xtext.resource.IResourceDescription;
 import org.eclipse.xtext.xbase.compiler.JvmModelGenerator;
 
 import com.avaloq.tools.ddk.xtext.export.conversion.ExportValueConverterService;
 import com.avaloq.tools.ddk.xtext.export.generator.ExportJvmModelGenerator;
 import com.avaloq.tools.ddk.xtext.export.generator.ExportOutputConfigurationProvider;
 import com.avaloq.tools.ddk.xtext.export.naming.ExportQualifiedNameConverter;
+import com.avaloq.tools.ddk.xtext.export.resource.ExportResourceDescriptionManager;
 import com.avaloq.tools.ddk.xtext.formatting.LfLineSeparatorInformation;
 
 
@@ -70,6 +72,16 @@ public Class<? extends JvmModelGenerator> bindJvmModelGenerator() {
     return ExportJvmModelGenerator.class;
   }
 
+  /**
+   * Binds the description manager which keeps Java type changes from re-queuing export models.
+   *
+   * @return the export specific resource description manager
+   */
+  @Override
+  public Class<? extends IResourceDescription.Manager> bindIResourceDescription$Manager() { // NOPMD
+    return ExportResourceDescriptionManager.class;
+  }
+
   @Override
   public Class<? extends org.eclipse.xtext.formatting.IFormatter> bindIFormatter() {
     return com.avaloq.tools.ddk.xtext.export.formatting.ExportFormatter.class;
diff --git a/com.avaloq.tools.ddk.xtext.export/src/com/avaloq/tools/ddk/xtext/export/resource/ExportResourceDescriptionManager.java b/com.avaloq.tools.ddk.xtext.export/src/com/avaloq/tools/ddk/xtext/export/resource/ExportResourceDescriptionManager.java
new file mode 100644
index 000000000..c890eb507
--- /dev/null
+++ b/com.avaloq.tools.ddk.xtext.export/src/com/avaloq/tools/ddk/xtext/export/resource/ExportResourceDescriptionManager.java
@@ -0,0 +1,58 @@
+/*******************************************************************************
+ * Copyright (c) 2026 Avaloq Group AG and others.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ *     Avaloq Group AG - initial API and implementation
+ *******************************************************************************/
+package com.avaloq.tools.ddk.xtext.export.resource;
+
+import java.util.Collection;
+import java.util.List;
+
+import org.eclipse.xtext.common.types.access.impl.URIHelperConstants;
+import org.eclipse.xtext.resource.IResourceDescription;
+import org.eclipse.xtext.resource.IResourceDescription.Delta;
+import org.eclipse.xtext.resource.IResourceDescriptions;
+import org.eclipse.xtext.xbase.resource.XbaseResourceDescriptionManager;
+
+import com.google.inject.Singleton;
+
+
+/**
+ * Resource description manager for export models which ignores deltas of Java types.
+ * <p>
+ * The inferred JVM model of an export model references the Java interfaces of the exported EClasses, so the Xbase
+ * description manager records them as imported names and outgoing references. The builder then re-processes every export
+ * model whenever JDT reports a structural change to one of those interfaces, although the generated code only depends
+ * on the EMF model (the ecore and genmodel), whose own changes still affect export models.
+ * </p>
+ */
+@Singleton
+public class ExportResourceDescriptionManager extends XbaseResourceDescriptionManager {
+
+  @Override
+  public boolean isAffected(final Delta delta, final IResourceDescription candidate) {
+    return !isJavaTypeDelta(delta) && super.isAffected(delta, candidate);
+  }
+
+  @Override
+  public boolean isAffected(final Collection<Delta> deltas, final IResourceDescription candidate, final IResourceDescriptions context) {
+    final List<Delta> nonJavaDeltas = deltas.stream().filter(delta -> !isJavaTypeDelta(delta)).toList();
+    return !nonJavaDeltas.isEmpty() && super.isAffected(nonJavaDeltas, candidate, context);
+  }
+
+  /**
+   * Returns whether the given delta describes a Java type, as reported by JDT through the {@code java:/} URI scheme.
+   *
+   * @param delta
+   *          the delta, must not be {@code null}
+   * @return {@code true} if the delta is about a Java type
+   */
+  private static boolean isJavaTypeDelta(final Delta delta) {
+    return URIHelperConstants.PROTOCOL.equals(delta.getUri().scheme());
+  }
+}