Text formatting in script templates

I’ve just finished writing the first draft of a script in Scrivener, using the BBC Taped Drama template, in which script actions display in all caps. This doesn’t bother me personally, though it grated a little at first, but my editor for this particular project has requested that script actions appear in normal text. Unfortunately, he didn’t tell me this in advance. I have now located the script options menu and have unticked the all caps box under script actions, but this has not affected the script actions already in existence. Is there a way to convert those lines back into regular text without converting them entirely to lowercase and then having to fix the capitalisation? There are rather a lot of lines and my free time is limited.