I am quite confused.
Here are the upgrade prices, which I JUST NOW copied to paste in here:
SONAR X3 Producer Download: Site Price
Upgrade from SONAR X2 Producer $149.00
Upgrade from any SONAR Producer $199.00
Upgrade from any SONAR Studio $299.00
Upgrade from any other SONAR $399.00
Upgrade for any registered customer $449.00
It looks to me like they want $199 to upgrade from X1, or any other prior Sonar Producer version, not $149.
I am not sure if you select the upgrade from X2 that it will allow you to install, since you are coming from X1. I do not have any awareness of what checks and balances are in place, if any, where it would either allow or deny an upgrade from X1 using an upgrade that is explicitly supposed to be coming from X2.
Bob Bone