The frustrating part is that when I need to delete one track, I never know what ELSE will get deleted. Just now it deleted 7 minutes guitar track which I was able to get back because I catch it on time and could "Undo" delete. What happens is that I am thinking I am deleting Selected track, but often other tracks have blue light on them which makes them also disappear. Some time I want to delete one SELECTED track and it would say, "Delete 3 tracks?" I would say NO and go look for what ever else was selected. But this time it said, "Delete track?"- it definitely did NOT say "Delete 2 tracks?", I know because I paid attention to it. So I said Yes and it deleted a MIDI track, but then the guitar track disappeared. This is just so wrong! This was guitar track that was recorded by sessional guitar player and I had to pay for it. I can not afford it to be randomly deleted and then have to ask him to come back and learn the song again. All these little square blue lights are a mass. I can not think of occasion when I would need to use them. To me if I select track by clicking on the track and making it active, it should be the only one track that gets to be deleted with no surprises. The guitar track was the last track I was working with before I wanted to delete MIDI track and some how the blue light was still on. Why is blue light not getting undone when I switch to another active track? There should be only one active track at the time, and if more than one track must be activated, it should have some more complicated key combination, something like Shift+Click. Delete 3 tracks? What 3 tracks? I have 60 to 70 tracks arrangements. I can not constantly go up and down looking for other things that got selected for unknown reason. I don't see how I can possibly select 3 tracks without being aware of it.   

Just my experience, but.........I have "never" had this happen. As soon as select a track, all others are deselected. Unless of course I am holding down a modifier key, like control on a PC.
I do delete tracks very often. Never any issues. I do not group tracks. Or anything like that. 
Hopefully others will have an answer for you. 
 
Also, I am not doubting you, just saying my experience in 20+ years of cakewalk|Sonar....I have never had tracks stay selected unless I wanted them to.

hello, I don't really understand about your tracks being deleted but I do get a loss of data.
You should always back up your projects. whenever I record a major element like a guitar track or a drum track that I paid for I save as project_name_Guitar_A1. or  A2 and so on... you need to find a naming convention that works for you. But the point is that when you record something you save that file as a new name and then Save it as a CWB file. Then you end up with multiple files for each project so you can go back to any stage of recording if you lose or delete something. You can also drag any wave or clip file into the browser file area then its right there if you have deleted it... get in the habit of hitting save as well :) make sure you have it backed up in another project as well. :)
 
peace! 

Go to the backup of your session players recording.

Stratman, there is ACTIVE track- the track that glows blue (or orange if you have dark theme) in the box where you type the track name. That is active track. But then there is Selected track, which is NOT getting unchecked every time you check other track. You can have 1, 3, 5, 10, all tracks selected. If you working on track 25, it gets the blue square light in the corner On. When you switch on another track (ACTIVATE), the track 25 stays selected even if you working on track 28. So if you want to delete track 28, track 25 gets deleted with it.
PassiveDrift, I usually have more than one project and some time I open a wrong project and mix it just to realize it was older project, but that is another story. Like right now I am in final mixing stage of this 7 minutes song and I am missing a BASS guitar part at the end of the song- about 16 measures. I can not explain it because we recorded whole song- why would we leave 16 measures at the end not recorded? And now it is not there. I don't know if the same issue would apply to partial wave clips, but most likely the part got selected and deleted when something else was deleted. I just opened older project and it is there, so I was able to copy and paste the clip in to the final mix project. But it likely got deleted today or last night and I don't have any idea how. I remember deleting one MIDI track today which resulted in deleting guitar track with it. We need the blue lights to go off when another track is active and only select more than one track at a time by holding SHIFT or other key.
 

Hey Vladsyn. 
 
The select/delete behavior seems to be consistent for me. Here's how I see it:
 
1. Whichever Track number glows is always selected. If I hit delete,  that is where the deletion will happen. It I click on a clip in a different track, the track selection moves automatically.
 
2. If I change tracks by clicking anywhere in the Track name pane other than its track number, or use the up/down arrows or a control surface to make another track active (I may wish to make another midi track active to play a synth for example), I am only changing the active track. The track selection does not move. (This would seem to me to be the only way you could think sonar was deleting the wrong track, but it seems to me this is more user error than unintended behaviour. Maybe I am just used to its quirky ways:)
 
Try as I may I cannot make Sonar misquote the number of tracks it is going to delete, or delete anywhere but on the active track/s, and that is always indicated by the glowing track selection number/s.
 
In short, to select a track click on it's track number (or control click for multipes). Any deletion ALWAYS happens on the selected track/s and that is ALWAYS indicated by the glowing track number.

That is because you only clicking on the track number. I try not to click on the track number to avoid it turn blue. There are two ways to make track active- click on the track number turns little blue square blue. Click anywhere else and it turns Track Name box light blue- this is different from square box. Yes, you can delete 2 tracks- if you have one track selected by clicking on Number of the track and then click on another track to make track name active- then 2 tracks would get deleted. In older Sonar versions, the selected track was also turning different color (light gray)- this was very helpful to know for sure what track is selected. Now the only thing changes is the track name background color.
Now if you go in to the end of a song and clip on one part of the track that is split from other parts, it lights up as selected and the track number blue square lights up. Now if you click on another track, it will become active (track name background turns blue), but previous track and selected part at the end of the song stays highlighted. If it is 5 minutes in to the song and I am at the beginning of the song- I can not see that something is highlighted. Which places at risk of deletion.
 
I don't know when the blue squares on track number was added to Sonar. I have to check older Sonar releases. I only care about track name background turning blue- this is old Sonar way to select track. This is what I am used to. Being obligated to always click on track number is inconvenient because it is very small. I like to click on anything BUT the track number, because often if you click wrong way, all tracks (all 60 of them) get selected.

I agree with strat... Never had an issue with delete... It always says how many tracks are being deleted... Been using sonar since 4 or 5... After with tenfeet too.

@vladasyn,
  Use the Shift-Ctrl-A keyboard shortcut to Deselect All before clicking the Active track that you want to delete.  This should prevent deleting any tracks that may have been Selected and are out of view.
 
  Like others have responded, I could not force SONAR to report an incorrect number of tracks to delete.  Every time I tested SONAR, the Selected track(s) and the Active track were included in the total.
 
Hope this helps,
-- Ron
 

I have been using  Deselect All for many years because I've had extra tracks get deleted in the past.