Program: 52224
Project: 52224
Buggy source:
/** 
 * Compare changes between an items owning collections and what is in the CSV file
 * @param item The item in question
 * @param collections The collection handles fro mthe CSV file
 * @param actualCollections The Collections from the actual item
 * @param bechange The bulkedit change object for this item
 * @param change Whether or not to actuate a change
 * @throws SQLException if there is a problem accessing a Collection from the database, from its handle
 * @throws AuthorizeException if there is an authorization problem with permissions
 * @throws IOException Can be thrown when moving items in communities 
 */
private void compare(Item item,ArrayList<String> collections,Collection[] actualCollections,BulkEditChange bechange,boolean change) throws SQLException, AuthorizeException, IOException, MetadataImportException {
  for (  String csvcollection : collections) {
    boolean found=false;
    for (    Collection collection : actualCollections) {
      if (csvcollection.equals(collection.getHandle())) {
        found=true;
      }
    }
    if (!found) {
      DSpaceObject dso=HandleManager.resolveToObject(c,csvcollection);
      if ((dso == null) || (dso.getType() != Constants.COLLECTION)) {
        throw new MetadataImportException("String_Node_Str" + item.getID() + "String_Node_Str"+ item.getHandle()+ "String_Node_Str");
      }
 else {
        Collection col=(Collection)dso;
        bechange.registerNewOwningCollection(col);
        if (change) {
          col.addItem(item);
        }
      }
    }
  }
  for (  Collection collection : actualCollections) {
    boolean found=false;
    for (    String csvcollection : collections) {
      if (collection.getHandle().equals(csvcollection)) {
        found=true;
      }
    }
    if (!found) {
      bechange.registerOldOwningCollection(collection);
      if (change) {
        if (item.getCollections().length > 1) {
          collection.removeItem(item);
        }
 else {
          throw new MetadataImportException("String_Node_Str" + item.getHandle() + "String_Node_Str"+ collection.getHandle()+ "String_Node_Str");
        }
      }
    }
  }
}

Fixed version (ground truth):
/** 
 * Compare changes between an items owning collections and what is in the CSV file
 * @param item The item in question
 * @param collections The collection handles fro mthe CSV file
 * @param actualCollections The Collections from the actual item
 * @param bechange The bulkedit change object for this item
 * @param change Whether or not to actuate a change
 * @throws SQLException if there is a problem accessing a Collection from the database, from its handle
 * @throws AuthorizeException if there is an authorization problem with permissions
 * @throws IOException Can be thrown when moving items in communities
 * @throws MetadataImportException If something goes wrong to be reported back to the user
 */
private void compare(Item item,ArrayList<String> collections,Collection[] actualCollections,BulkEditChange bechange,boolean change) throws SQLException, AuthorizeException, IOException, MetadataImportException {
  for (  String csvcollection : collections) {
    boolean found=false;
    for (    Collection collection : actualCollections) {
      if (csvcollection.equals(collection.getHandle())) {
        found=true;
      }
    }
    if (!found) {
      DSpaceObject dso=HandleManager.resolveToObject(c,csvcollection);
      if ((dso == null) || (dso.getType() != Constants.COLLECTION)) {
        throw new MetadataImportException("String_Node_Str" + item.getID() + "String_Node_Str"+ item.getHandle()+ "String_Node_Str");
      }
 else {
        Collection col=(Collection)dso;
        bechange.registerNewOwningCollection(col);
        if (change) {
          col.addItem(item);
        }
      }
    }
  }
  for (  Collection collection : actualCollections) {
    boolean found=false;
    for (    String csvcollection : collections) {
      if (collection.getHandle().equals(csvcollection)) {
        found=true;
      }
    }
    if (!found) {
      bechange.registerOldOwningCollection(collection);
      if (change) {
        if (item.getCollections().length > 1) {
          collection.removeItem(item);
        }
 else {
          throw new MetadataImportException("String_Node_Str" + item.getHandle() + "String_Node_Str"+ collection.getHandle()+ "String_Node_Str");
        }
      }
    }
  }
}