[MNG-8340] Resolve parent according to the exact model location

Author: gnodet

impl/maven-core/src/main/java/org/apache/maven/project/DefaultProjectBuilder.java

@@ -565,7 +565,12 @@ private static org.apache.maven.model.building.ModelProblem convert(ModelProblem
         @SuppressWarnings({"checkstyle:methodlength", "deprecation"})
         private void initProject(MavenProject project, ModelBuilderResult result) {
             project.setModel(new org.apache.maven.model.Model(result.getEffectiveModel()));
-            project.setOriginalModel(new org.apache.maven.model.Model(result.getFileModel()));
+            Model originalModel = result.getFileModel();
+            if (originalModel.getParent() != null && originalModel.getParent().getRelativePath() == null) {
+                originalModel =
+                        originalModel.withParent(originalModel.getParent().withRelativePath(".."));
+            }
+            project.setOriginalModel(new org.apache.maven.model.Model(originalModel));
 
             initParent(project, result);