@Override protected void preloadForm() { display.clearSelectionList(); display.getGroupName().setValue(oldGroupName); final RosterGroup group = roster.getRosterGroup(oldGroupName); final Set<XmppURI> addedUris = new HashSet<XmppURI>(); if (group != null) { for (final RosterItem item : group.getItems()) { display.addSelectedRosterItem(item); addedUris.add(item.getJID()); } } for (final RosterItem item : roster.getItems()) { if (!addedUris.contains(item.getJID())) { display.addRosterItem(item); } } }