Originally Posted by ldolse
I would think an actual space should have worked
So would I. I often suspect (for pdf fixup problems) that the problem is not the failure to insert, it's that the "garbage text" in the pdf isn't getting matched so no insert will ever happen. To make sure, just replace it with some text, which is guaranteed to work, and see if your regex matching is actually working. What works in the wizard, does not always work when it runs, particularly if it's a multiline replace.