File filesBackupDirectory = getFilesInstanceBackupDirectory();
File root = getInstallation().getInstanceDirectory();
FileFilter filter = new UpgradeFileFilter(root, false);
for (String fileName : root.list()) {
File f = new File(root, fileName);
fm.move(f, filesBackupDirectory, filter);
}
} catch (ApplicationException ae) {
throw ae;
} catch (Exception e) {
throw new ApplicationException(