There might be a slight issue with the connection of components when importing a SPICE file.
In the project example “SPICE Import”, when opening the file “spice_circuit.cir” and converting it (press F2 key), the components are isolated (see attachment), wherease this example file was suppored to contains a complete circuit, i.e. connected components as well as simulations.
SPICE files contain netlists only, but not a complete schematic. Therefore, it’s not possible to create wires here. But the components are connected nonetheless, because nodes with the same node name are connected! Hence, the circuit can be simulated.