3DS Max - Bip saved with extra frames?

TorQue[MoD]

I've been experiencing some weird issues with max lately... I created an animation that's 260 frames long. When I save it as a bip to use with the Motion Mixer, the clip is 423 frames for some weird reason. I increased the duration of the timeline and there are no key frames after 260. I can't figure out why its saving more data than it needs to. First time I've seen this issue and no idea how to fix it.

TorQue[MoD]

For anyone else who runs into this problem, upon further testing, I discovered an option during bip file saving where you could specify a specific range. This solved the problem though I'm still not sure why it was happening to begin with as its never happened before.