[Panagiotis Kouvelis]

Hi there, I don’t know if you found an answer to your issue, the new Audition has the match volume windows with the new ITU-BS1770-2 algorithm and the old one has the older “perceived loudness” preset for this kind of jobs.

Try also LMB from NuGen

https://www.nugenaudio.com/LMB_Loudness_batch_processor.php

the Leven One from Grimm Audio

https://www.grimmaudio.com/pro_software_levelone.htm

or the open source R128Gain

https://r128gain.sourceforge.net/

Cheers!