Heavy nuke scenes 2

In quite a complex scene, that I mentioned in previous post, where environment is fully built from mattepaints, in around 60-70 layer, and a number of these is 6000*8000 or higher in resolution, memory handling is quite crucial. And the more effect, correction, masking is made on these big mattepaints, the memory quickly can go up high. So what I did is after getting good feedback (from sup) on these big layers, I always saved them with all color corrections, and masking to a new exr file (with autocrop if which is a nice thing). But left the replaced branch of nodes in the script, if later have to change it. Of course you can't save animated nodes to a single exr, but that's life.