I'm reading all these complaints about export and scratching my head. I totally agree with Atsuko.
Way back in Guitar studio day's someone here said "use Select none, not select all"
I have never changed the export options, They seem pre set to work properly version after version for me. I will change the default 32 to 16 for CD's and that's it.
I of course I have always been aware of checking that little "play the tails" box too. Seems that must be the default or possibly Sonar remembers that for me when I update.
I have never, ever had an export not play exactly like what it was supposed to sound like in 10 years.
And I would never dream of releasing a song without proofing it first.