diff --git a/src/site/markdown/Category.md b/src/site/markdown/Category.md
index 307a849b4c..c8517dc96e 100644
--- a/src/site/markdown/Category.md
+++ b/src/site/markdown/Category.md
@@ -32,8 +32,10 @@ The following is an example, demonstrating a complex category definition.
  
    <!-- Directly include bundles, without a feature -->
    <bundle id="bundle.id" version="1.3.1.v2023"/>
+   
    <!-- Directly include any iu -->
    <iu id="unit.id"/>
+   
    <!-- Include all IUs matching an expression -->
    <iu>
      <query> 
@@ -58,7 +60,11 @@ The following is an example, demonstrating a complex category definition.
    <category-def name="javax" label="Bundles starting with javax."/>
    <iu>
       <category name="javax"/>
-      <query><expression type="match">id ~= /javax.*/</expression></query>
+      <query>
+      	<expression type="match">id ~= /javax.*/</expression>
+      </query>
    </iu>
 </site>
-```
\ No newline at end of file
+```
+
+You can read more about P2 Query Syntax [here](https://wiki.eclipse.org/Equinox/p2/Query_Language_for_p2).
diff --git a/tycho-core/src/main/java/org/eclipse/tycho/p2/tools/publisher/PublisherActionRunner.java b/tycho-core/src/main/java/org/eclipse/tycho/p2/tools/publisher/PublisherActionRunner.java
index ed5c02b328..197ae94481 100644
--- a/tycho-core/src/main/java/org/eclipse/tycho/p2/tools/publisher/PublisherActionRunner.java
+++ b/tycho-core/src/main/java/org/eclipse/tycho/p2/tools/publisher/PublisherActionRunner.java
@@ -96,10 +96,9 @@ private void setTargetEnvironments(PublisherInfo publisherInfo) {
 
     private void handlePublisherStatus(IStatus result) {
         if (result.matches(IStatus.INFO)) {
-            logger.info(StatusTool.collectProblems(result));
+            logger.info(StatusTool.toLogMessage(result));
         } else if (result.matches(IStatus.WARNING)) {
-            logger.warn(StatusTool.collectProblems(result));
-
+            logger.warn(StatusTool.toLogMessage(result));
         } else if (!result.isOK()) {
             Throwable directlyIncludedException = result.getException();
             throw directlyIncludedException instanceof RuntimeException runtimeEx //
diff --git a/tycho-core/src/main/java/org/eclipse/tycho/p2tools/MirrorApplicationServiceImpl.java b/tycho-core/src/main/java/org/eclipse/tycho/p2tools/MirrorApplicationServiceImpl.java
index 4709107cdb..76a629c9eb 100644
--- a/tycho-core/src/main/java/org/eclipse/tycho/p2tools/MirrorApplicationServiceImpl.java
+++ b/tycho-core/src/main/java/org/eclipse/tycho/p2tools/MirrorApplicationServiceImpl.java
@@ -354,7 +354,7 @@ static class LogListener implements IArtifactMirrorLog {
         @Override
         public void log(IArtifactDescriptor descriptor, IStatus status) {
             if (!status.isOK()) {
-                logger.debug(MIRROR_TOOL_MESSAGE_PREFIX + StatusTool.collectProblems(status));
+                logger.debug(MIRROR_TOOL_MESSAGE_PREFIX + StatusTool.toLogMessage(status));
                 hasLogged = true;
             }
         }
@@ -362,7 +362,7 @@ public void log(IArtifactDescriptor descriptor, IStatus status) {
         @Override
         public void log(IStatus status) {
             if (!status.isOK()) {
-                logger.warn(MIRROR_TOOL_MESSAGE_PREFIX + StatusTool.collectProblems(status));
+                logger.warn(MIRROR_TOOL_MESSAGE_PREFIX + StatusTool.toLogMessage(status));
                 hasLogged = true;
             }
         }
diff --git a/tycho-core/src/main/java/org/eclipse/tycho/p2tools/TychoMirrorApplication.java b/tycho-core/src/main/java/org/eclipse/tycho/p2tools/TychoMirrorApplication.java
index 4fc4f02fad..1587aa1119 100644
--- a/tycho-core/src/main/java/org/eclipse/tycho/p2tools/TychoMirrorApplication.java
+++ b/tycho-core/src/main/java/org/eclipse/tycho/p2tools/TychoMirrorApplication.java
@@ -57,8 +57,10 @@
 import org.eclipse.equinox.p2.repository.metadata.IMetadataRepository;
 import org.eclipse.equinox.p2.repository.metadata.IMetadataRepositoryManager;
 import org.eclipse.tycho.TargetPlatform;
+import org.eclipse.tycho.p2.repository.ListCompositeMetadataRepository;
 import org.eclipse.tycho.p2.tools.DestinationRepositoryDescriptor;
 import org.eclipse.tycho.p2.tools.RepositoryReference;
+import org.eclipse.tycho.p2maven.ListCompositeArtifactRepository;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
@@ -94,6 +96,26 @@ protected IArtifactRepository initializeDestination(RepositoryDescriptor toInit,
         return result;
     }
 
+    @Override
+    public IArtifactRepository getCompositeArtifactRepository() {
+        IArtifactRepository repository = super.getCompositeArtifactRepository();
+        if (targetPlatform != null) {
+            return new ListCompositeArtifactRepository(List.of(repository, targetPlatform.getArtifactRepository()),
+                    agent);
+        }
+        return repository;
+    }
+
+    @Override
+    public IMetadataRepository getCompositeMetadataRepository() {
+        IMetadataRepository repository = super.getCompositeMetadataRepository();
+        if (targetPlatform != null) {
+            return new ListCompositeMetadataRepository(List.of(repository, targetPlatform.getMetadataRepository()),
+                    agent);
+        }
+        return repository;
+    }
+
     @Override
     protected Slicer createSlicer(SlicingOptions options) {
         List<Map<String, String>> filters = getContextFilters();