Trying to remove a substring from program title

For whatever reason, my "EPG provider" now thinks it's a good idea to add the string "(Live)" randomly (sometimes only) to a lot of the shows I have scheduled to record. Here is an example:

  <programme start="20250727210000 +0800" stop="20250727213000 +0800" channel="Channel 5">
    <title lang="en">(Live) News Tonight</title>
    <desc lang="en">The daily evening-news programme featuring highlights and coverage of both local and international news with a local perspective.</desc>
    <icon src="https://prod98.togglestatic.com/shain/v1/dataservice/ResizeImage/$value?Format='jpg'&amp;Quality=85&amp;ImageId='9094562'&amp;EntityType='LinearSchedule'&amp;EntityId='ab3dc459-259c-48b1-a726-d2e6d4738a27'&amp;Width=1280&amp;Height=720" />
    <rating system="IMDA">
      <value>G</value>
    </rating>
  </programme>

So basically, I want to remove the æstring "(Live)", including any leading or trailing whitespace, from the title of any channel. Since the siteini is encrypted (big shigh!!!), I cannot do it there. So I tried this rex.config.xml:

<?xml version="1.0" encoding="utf-8"?>
<settings>
    <filename>C:\Users\chjo\AppData\Local\WebGrab+Plus\rex\guide.xml</filename>

    <regex-replace
        element="title"
        search="\s*\(Live\)\s*"
        replace-with=""
        case-sensitive="no"
    />

</settings>

That did not work at all. The output log shows that Rex is processing my guide, but no other output than that, and no error messages either. I'm on version 5.3.0.0 under Windows.

How can I achieve what I describe above?

The reason I need this is that my backend is doing exact matching of the program title to record, and this breaks when "(Live)" is randomly added to the title.