Have a look in index.german.php at the two strings:
$txt['movetopic_auto_topic']
$txt['movetopic_default']
The second should have the "[TOPIC LINK]" translated the same as the first, so in your case probably it should look like:
$txt['movetopic_default'] = 'Eine oder mehr Beitrage in diesem Thema wurden verschoben nach [BOARD] - [THEMEN LINK]';