Hi Aslow3
Well the problem has been solved, but not In Sonar permanently.You have to manipulate It.
Big thanks for your suggestions.
I have found out from a lot of discussion with fellow club members who know there onions,that If you open the Event list and go to the far right hand side ,then go down the list until the notes start-----
Hold mouse over each note and move the values up 1 tick the Portamento Is bang on.
As you know ,if you had a lot of portamento In a song It would take forever and a day doing this for every note when all you want to do Is minor adjustments to a song.
Is there something Sonar could do to rectify this or is there a line you could write somewhere in computer language.
I am not a computer techie, but now know what Is going on and It Is rather annoying when trying to edit a Tyros 5 Instrument section.
As I said earlier One Man Band plays back my Portamento files perfectly without adjustments.
The only trouble is ,that It Is a little basic for working with and would much prefer using Sonar's Piano roll.
For the cost of Sonar I would have thought things like this would have been sorted ages ago.
I cannot believe nobody else with Yamaha Instruments has not queried this problem.
All I want to do Is get Sonar to play back what the Tyros sequencer has recorded and make minor timing adjustments.
Not a lot to ask --HOPE!!

If Sonar could fix this ,they will beat Cubase to It!!!well,BIG HOPE!!

4 days now gone .still no reply from Sonar support
All the best
John