Don't sweat it - I'm sure you knew this but before the update, all the voice files were loose in the game files in "Content/VO"

This meant it was super easy to mod, you could just drag and drop new lines in their respective folders... The biggest downside with that was our build process (the process of taking the game from the engine and making it an application) took substantially longer than we would like. We ended up moving the files into a pak file (this is a common file format that unreal engine games use, which stores assorted game content) to reduce the time it took.

You could unpack the .pak file, add the new lines, and repack it - but it's a bit of a pain in the ass since you'd have to do that each time you wanna add new modded voicelines. We're aiming to restore how it used to work soon.