Backannotation of Interconnect delays

[Steve Hamm]

Hi all
I am trying to perform SDF backannotation. My sdf file also include
some interconnect delays. But to my surprise instead of adding the
interconnect delays to the IOPATH delays it is substracting the
interconnect delay from IOPATH delay.
I am using verilog-XL to perform Backannotation and my sdf file is
generated using Silicon Ensemble.

Thanks in advance for your kind help.

Steve hamm