Bitmap bug or undocumented limitation

I’m creating a knob which requires multiple bitmaps framed together. Halion is creating the bitmap strip which then exceeds that size limitation. Halion is creating the bitmap but then it’s not able to render it. I could create a smaller knob and stretch it to a bigger size but that would give me a more pixelated look compared to using it’s natural resolution.

Here’s the product I’m currently creating within Halion 6. The center knob in this picture is what I’m trying to create. It exceeds the bitmap limitation when all of the frames for it are added into a single file.