You can create a symbol by yourself. The symbol can be in any shape as long as it contains the same pins as the extracted view does -- both pin names and directions ( input, output, ...).
You can also simulation the extracted view directly. The stimuli can be added with a spice stimulus file (ascii file). Add the stimulus file in the 'Set Environment' Form. As for the format of the voltage source and current source, you can see the schematic netlist ( generated by Analog Artist ).