How to split test a Butterfly Marketing template page:
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Note: If you DON'T use the Butterfly Marketing script version 1.704, 1.722 or newer...
here is the code you need if use with any other version of the Butterfly Marketing script:
Copy this code into a file called inc.template.php. The file is located in the lib directory.
Search for the "function parse" and place the below code right before "return $str;".