lost replay gain ID-tags on conversion from flac to MP3

[dhartson]

I have a library of flac files with both album and track replay gain values in the ID-tags. For example:
REPLAYGAIN_ALBUM_GAIN -7.33 dB
REPLAYGAIN_ALBUM_PEAK 0.999938965
REPLAYGAIN_REFERENCE 89.0 dB
REPLAYGAIN_TRACK_GAIN -4.72 dB
REPLAYGAIN_TRACK_PEAK 0.999938965
Using dMC r12.4, I converted to mp3, and the only line of replay gain data that was retained was the "reference" line (REPLAYGAIN_REFERENCE). I believe that, about a year ago, I used dMC r11.5 to do the same conversion and all the replay gain ID-tag data was retained. Any ideas?

[LtData]

dMC r11.5 was not aware of ReplayGain tags and just copied them over. dMC r12 is aware of them and does NOT copy them over. This is because transcoding can change what ReplayGain values are needed. If you need ReplayGain values in the new tracks, use the ReplayGain DSP effect to redetect and add them to the new files.