After the update, for Themify, it identifies the following file
themify/themify-utils.php
and still marks the warning as Severe with the message
This file is a PHP executable file and contains the word 'eval' (without quotes) and the word 'urldecode(' (without quotes). The eval() function along with an encoding function like the one mentioned are commonly used by hackers to hide their code. If you know about this file you can choose to ignore it to exclude it from future scans.
The Updraftplus.php file has changed from a Severe to a Warning