[TxMt] Bug Confirmation?

So, I'm finally getting to the point that I'm really starting to play around a bit with the automation aspects of TextMate. I think that I found a bug, but I want to confirm.

I created a macro, which through the course of its steps utilizes a snippet. The snippet has default values, which I'm also using, because it's a very repetitive task. The idea behind this, is that when I got to a different spot in the code that I'm working on, I would change the snippet defaults and keep using the macro.

What appears to be happening instead, is the old default values are used instead of the new ones. When I use the snippet manually, the new values I put in are still used. Is this a bug, or is my expectation wrong?

(this is on b5 btw)