Can you use "text Change" to change a post excerpt?

I have a multisite that I use content copier to copy posts throughout network. After copying a post to 228 sites, I noticed an error in the excerpt. Is it possible to use the "text change" of Ultimate Branding to correct this error? I've tried it and it doesn't seem to work for this but I thought I would ask your opinion. If not, what would you suggest is the most efficient method to make a text correction on the post excerpt?