Recovered WAV file is too short

Hi everyone! I recorded a live show in ableton (WAV, 48kHz), there was a break halfway through so I saved and started a new recording in the same project, when I saved and reopened at the end the first half was corrupted. I ran to audacity to import raw and after some fiddling managed to hear the track; the problem is that I can only hear the first minute of a 60 minutes recording. I tried messing around with byte offset during import but 2 and 44 are the only audible ones and they don’t fix the problem.

The first thing I would try would be to use a file conversion program like ffmpeg to see if it can resurrect any of the audio.

There may be audio file repair programs out there. Have you looked for any?