Expression frame range issue


I currently have a camera shake expression for an animation I am working on. There is a section of the animation that I do not want to render (around 100 frames) but cannot delete. My problem is that I cannot get the camera shake to align properly. I have tried freezing the expression but it always jumps back to the default start and not the last value before it was frozen. Is there an easy way to get the shake to align seamlessly without an obvious jump? I don’t know MEL syntax well enough to figure out if this is possible or not.