Cannot Replace Existing Audio Files LE3

[SpaceD0lphin]

CURRENT BEHAVIOUR
When attempting to overwrite an existing audio file, nothing appears to change.

EXPECTED BEHAVIOUR
The audio file should be replaced with the specified file and its WwiseEvent durations updated.

REPRO

1. In LE3, open a conversation that already has a custom AFC associated with it. (My mod is included for this purpose.)
2. Find a line of dialogue that contains custom audio.
3. Attempt to replace the audio file.
4. Observe no changes are recorded.

Screenshots and files used to replicate this
2025-10-22 01-50-15.zip
Nobody Cheated (LE Version).zip

In the video, you can see me play the new line in UDK to illustrate the difference, then I go open a line in DLG, open its FOVO container, and attempt to replace its audio. No changes occur.

Version information:
Nightly 17/10/2025 and equivalent Stable

NOTES
My WwiseCLI is set at the following path: G:\Modding\Wwise 2019.1.6.7110\bundle\Authoring.x64.tar\Authoring.x64\Authoring\x64\Release\bin\WwiseCLI.exe
I have also tried moving the WwiseCLI.exe to my desktop, and re-extracting the file to other locations.
In this project, I am only trying to overwrite my old custom voice lines with newer ones.