Egally is correct, if you just let the handle hang while pushing the blade through you will not damage it at all. If you disengage the lock and pull down on the handle for easier batoning you can cause stress on the pivot but it's better than doing it in the locked position.
If you pull down on the handle of a fixed blade you run this risk of breaking it too. The point of the blade should be lower then the handle for a fixed blade or a folder.