The Synth rack is supported as of 2012.11.  https://discuss.cakewalk.com/index.php?/topic/8792-20191112-feature-overview-updated-06-jan-2020/&tab=comments#comment-78992 You can use my C4Mapper utility as an alternative to editing the .ini file: http://msmcleod.co.uk/cakewalk/C4Mapper.zip
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