When a model is replaced, swap the model on the board with the new model. If the model was not in play, the new model is considered Deployed.
The player using the replacing effect chooses the new model’s Facing.
If the new model has a different sized base, then it must be placed so that the larger base entirely covers the area of the smaller base.
If the model being replaced was in BtB with an Enemy model, the new model must be placed in BtB with the Enemy model if possible.
When 2 models swap positions, replace each model with the other model.