When I linearize one of the subsystem in simulink model using Linear analysis tool and then use this linear model in time domain simultation the some of the output are inverted . Can any body tell me why is it happening?

I am trying to linearize part of my invert model then replace the nonlinear model with linear one to check accuracy of linearization at operating point. The input to linear part is voltage and outputs are angle and currents. Both currents and voltages are in dq0 reference frame. In output of linear model the currents are inverted but angle is the same. I have attached the output of both linear and non-linear model. Kindly if someone tell me what is happening?

Regards