Reactor simulation 2 keyframes?

[Thykka]

I've made a short (250frame) reactor simulation using cloths. Now i'd like the simulation to be a bit longer, but with using the already calculated data. If I just Re-scale the time to 500 frames the simulation still stays 250 frames long. So how can I convert the sim to keyframes? I didn't find anything on the reactor documentation :S

[DeadlyFreeze]

Rescale works fine, you just have to change the 'end time' and not the 'length'...