Shen's voice over? Are you certain? I'm comparing a video of his voice from 2012 and the current voice files listed on the wiki, and they're identical. If you updated his VO, it was extremely minor. VGUs have typically revoiced the character entirely with brand new dialogue altogether, such as the difference between old Morgana and new Morgana.
oh sorry thought this was asking about Mundo. Yeah Shen was done in a old time when we our VGU pipeline wasnt as robust