I need to compare how midi automation works in older versions of Cubase and in current versions. I have a suspicion current versions have it broken.
SX3 is available as it’s the last version to open “all” files created on earlier versions. I doubt you will be able to get SL anywhere.
ftp://ftp.steinberg.net/Download/Cubase_4/Cubase_SX_3_VST_Song_Conversion/
Of course the other option is to explain your suspicion and someone may be able to verify or not