[Importer] Fix erroneous reports

Ref: JBIDE-19807

Change-Id: I77142b1d7241ec0b38a1fbd3a95577a72964fb05
Signed-off-by: Mickael Istria <mistria@redhat.com>
diff --git a/bundles/org.eclipse.e4.ui.importer/src/org/eclipse/ui/internal/wizards/datatransfer/EasymportJob.java b/bundles/org.eclipse.e4.ui.importer/src/org/eclipse/ui/internal/wizards/datatransfer/EasymportJob.java
index 1aec88f..5753c8e 100644
--- a/bundles/org.eclipse.e4.ui.importer/src/org/eclipse/ui/internal/wizards/datatransfer/EasymportJob.java
+++ b/bundles/org.eclipse.e4.ui.importer/src/org/eclipse/ui/internal/wizards/datatransfer/EasymportJob.java
@@ -303,7 +303,9 @@
 				return null;
 			}
 			project.open(progressMonitor);
-			this.report.put(project, new ArrayList<ProjectConfigurator>());
+			if (!this.report.containsKey(project)) {
+				this.report.put(project, new ArrayList<ProjectConfigurator>());
+			}
 			return project;
 		} catch (Exception ex) {
 			throw new CouldNotImportProjectException(directory, ex);