[Matroska-users] .srt tracks in .avi input file

[vince]

i have an avi with 1 xvid, 2 ac3 and 2 srt tracks. no matter whether i check 
both srt tracks or just one of them or uncheck both mmg still muxes both 
subtitle tracks into the .mkv. tried versions 2.9.7 and 2.9.8