Plugboard: Removing Unicode characters that Kobo can't render

I have this plugboard for "series" in KOBOTOUCHEXTENDED:

I forgot exactly why I'm using the re_group. :o

Anyways, I have a fanfic that has some fancy unicode characters for some effect:

Attachment 189116

This is how it appears on the Kobo:

Attachment 189117

I'm guessing there's no real way for the Kobo to deal with this, so is there anything I can do on Calibre side without changing the series? Is there a way to strip out the Unicode without leaving behind the dash and pipe?

:thanks:

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