Metadata isn’t preserved in .wav conversion. However, it can be preserved in FLAC files; see the Saracon manual.
FAQ Weiss
SARACON
The Gain setting is a complex topic. The proper gain depends on the program material – the higher the level in terms of dBFS and the higher the compression of the program material (loudness), the more likely there are inter-sample overs.
Now, depending on how much clipping you can tolerate, you can adjust the Gain accordingly. -0.2dB works for “normal” program material that is not overly compressed and which preferably does not hit the 0dBFS ceiling.