Batch change environment score?

I have some files I want to edit for my personal use. What I want to do is change the environment score.  I found a thread that taught me how, but I'm wondering, is there a way to edit more than one object definition or catalog at the same time? I can ctrl-click and select more than one, but editing the score only changes the first one selected. Some of the items have a tonne of swatches, so if there's a way to do more than one at a time, that'd be great. Thanks!