diff --git a/maven-core/src/main/java/org/apache/maven/lifecycle/providers/AbstractLifecycleProvider.java b/maven-core/src/main/java/org/apache/maven/lifecycle/providers/AbstractLifecycleProvider.java
index e167cac59b9b..27ea758c7d3a 100644
--- a/maven-core/src/main/java/org/apache/maven/lifecycle/providers/AbstractLifecycleProvider.java
+++ b/maven-core/src/main/java/org/apache/maven/lifecycle/providers/AbstractLifecycleProvider.java
@@ -22,6 +22,7 @@
 import java.util.Arrays;
 import java.util.Collections;
 import java.util.HashMap;
+import java.util.LinkedHashMap;
 
 import javax.inject.Provider;
 
@@ -48,7 +49,7 @@ protected AbstractLifecycleProvider( String id, String[] phases, String[] plugin
                 throw new IllegalArgumentException( "Plugin bindings must have more than 0, even count of elements" );
             }
 
-            defaultBindings = new HashMap<>( len / 2 );
+            defaultBindings = new LinkedHashMap<>( len / 2 );
 
             for ( int i = 0; i < len; i += 2 )
             {
diff --git a/maven-model-builder/src/main/java/org/apache/maven/model/building/DefaultModelBuilder.java b/maven-model-builder/src/main/java/org/apache/maven/model/building/DefaultModelBuilder.java
index 22055d351fa3..87f2bfef3a9d 100644
--- a/maven-model-builder/src/main/java/org/apache/maven/model/building/DefaultModelBuilder.java
+++ b/maven-model-builder/src/main/java/org/apache/maven/model/building/DefaultModelBuilder.java
@@ -1080,7 +1080,15 @@ private void configureResolver( ModelResolver modelResolver, Model model, Defaul
         {
             try
             {
-                modelResolver.addRepository( repository, replaceRepositories );
+                try
+                {
+                    modelResolver.addRepository( repository, replaceRepositories );
+                }
+                catch ( AbstractMethodError e )
+                {
+                    modelResolver.addRepository( new org.apache.maven.model.Repository( repository ),
+                            replaceRepositories );
+                }
             }
             catch ( InvalidRepositoryException e )
             {
diff --git a/maven-model-builder/src/main/java/org/apache/maven/model/plugin/DefaultReportingConverter.java b/maven-model-builder/src/main/java/org/apache/maven/model/plugin/DefaultReportingConverter.java
index 3f109f6b90c7..7c1d57ca0f5e 100644
--- a/maven-model-builder/src/main/java/org/apache/maven/model/plugin/DefaultReportingConverter.java
+++ b/maven-model-builder/src/main/java/org/apache/maven/model/plugin/DefaultReportingConverter.java
@@ -160,22 +160,33 @@ public Model convertReporting( Model model, ModelBuildingRequest request, ModelP
         configChildren.add( newDom( "reportPlugins", reportPlugins, location ) );
         configuration = newDom( "configuration", configChildren, location );
 
-        sitePlugin = sitePlugin.withConfiguration( configuration );
+        Plugin finalSitePlugin = sitePlugin.withConfiguration( configuration );
 
-        PluginManagement pluginManagement = build.getPluginManagement();
-        if ( pluginManagement == null )
+        Plugin sitePluginFromPlugins = build.getPlugins().stream()
+                .filter( this::isSitePlugin ).findFirst().orElse( null );
+        if ( sitePluginFromPlugins != null )
         {
-            pluginManagement = PluginManagement.newBuilder()
-                    .plugins( Collections.singletonList( sitePlugin ) )
-                    .build();
+            List<Plugin> plugins = new ArrayList<>( build.getPlugins() );
+            plugins.replaceAll( p -> p == sitePluginFromPlugins ? finalSitePlugin : p );
+            build = build.withPlugins( plugins );
+        }
+        else if ( build.getPluginManagement() == null )
+        {
+            build = build.withPluginManagement( PluginManagement.newBuilder()
+                    .plugins( Collections.singletonList( finalSitePlugin ) ).build() );
         }
         else
         {
-            List<Plugin> plugins = new ArrayList<>( pluginManagement.getPlugins() );
-            plugins.add( sitePlugin );
-            pluginManagement = pluginManagement.withPlugins( plugins );
+
+            Plugin sitePluginFromManagement = build.getPluginManagement().getPlugins().stream()
+                    .filter( this::isSitePlugin ).findFirst().orElse( null );
+            if ( sitePluginFromManagement != null )
+            {
+                List<Plugin> plugins = new ArrayList<>( build.getPluginManagement().getPlugins() );
+                plugins.replaceAll( p -> p == sitePluginFromManagement ? finalSitePlugin : p );
+                build = build.withPluginManagement( build.getPluginManagement().withPlugins( plugins ) );
+            }
         }
-        build = build.withPluginManagement( pluginManagement );
 
         return builder.build( build ).build();
     }