[quote user="Darin Rodberg"]Here's a .dgn file[/quote]
Thanks for the example. I can reproduce what you describe exactly.
Unfortunately, the Analyze Element tools don't reveal the interior structure of a dimension element. I can't glean any clue about how the text changes: the data revealed by Analyze Element is the same afterwards as before. Unless someone from Bentley Systems can provide some inside information you're stuck.