You can change the signature of a sub-resource logic, that is, adding or removing a port. So, you have to update the instance of the sub-resource logic in the system.
Edit the simulation logic of a sub-resource. In our example, an output port is added to the Slider simulation Logic.

Exit Live Simulation.

The red icon
associated to the organizational resource shows you that the simulation logic is in error.
Double-click the organizational resource.

Right-click the instance in error and select

The instance is updated.