Ableton Forum

Don't think this came up - and it really isn't a bug , just a little potentially confusing - but when you delete a track eg. tr 4 , Tr 3 & Tr 5 are lined up one after another ... however the mute control of tr5 is/becomes ... F4 .

So you have to be carefull not to rely too much on your tracknrs when they are not renamed ...