Why is the replaygain-function disabled in cue files? I can't save replaygain values in cue file. Also when I tried to edit the replaygain values in a single file using the "Edit ReplayGain info (advanced)" function I got odd results. I calculated track and album gain values to file (Ogg Vorbis) and these were the values:

When I removed the "replaygain_track_gain" and "replaygain_track_peak" values, fb2k didn't remove them, instead it gave me these values:

I tried the same thing with mp3 file and when I calculated track and album values:

when I removed the "replaygain_track_gain" and "replaygain_track_peak" values, fb2k gave me these values instead:

I used APEv2 tags in mp3 file.

ReplayGain for cue sheets has not been disabled, it works as long as you scan entire file (album gain is set globally per cuesheet).
Apparently "edit ReplayGain info" dialog is buggy, I'm looking into it.

I scanned the entire file (or should I say all tracks from album) after I opened the cuesheet in foobar. I tried to add the album gain values, but fb2k said that the file was corrupt or something like that.