Titanfall 2 Beta Extractor does not record or play *specific* files

[Jcat4609]

Sorry if this seems extremely peculiar.

So I've been attempting to rip all of the sounds from Titanfall 2, as it's filled to the brim with perfect audio clips.
However, I've hit upon a snag which has some audio files unable to record (or play).

For example, the grunt voice lines.

If we go to event 6528 (diag_imc_grunt1_bc_[audio]), it records fine.
However, 6529 to 7118 (which have _gs and _hp) do not play audio, record, or export.

I don't know if it's PEBKAC, or if it's an issue with the dumper, but it's colouring me confused.

Also, just to rule it out, it seems other tools (or, well, tool) have this same issue. They skip over GS and HP, and only play BC audio.

Thank you for reading this, and I really hope I'm not being too much of a prat.