Refreeze

Hi All

I am currently having a problem with a plugin I have been using for a while with no problems at all (I wont say whatit is as thats unfair and not the point of this post). Anyway while looking at the problem I notice in the synth rack that the unfreeze button is illuminated but it is labeled 'refreeze'. I have not seen this before and cannot find it anywhere in the docs or online, I really just want to make sure this is normal - I am assuming it just freezes back to the previous frozen state without actually running the freeze process as such.