  The collapse transition of an isolated polymer has been modelled by many
different approaches, including lattice models based on self-avoiding walks and
self-avoiding trails. In two dimensions, previous simulations of kinetic growth
trails, which map to a particular temperature of interacting self-avoiding
trails, showed markedly different behaviour for what was argued to be the
collapse transition than that which has been verified for models based of
self-avoiding walks. On the other hand, it has been argued that kinetic growth
trails represent a special simulation that does not give the correct picture of
the standard equilibrium model. In this work we simulate the standard
equilibrium interacting self-avoiding trail model on the square lattice up to
lengths over $2,000,000$ steps and show that the results of the kinetic growth
simulations are, in fact, entirely in accord with standard simulations of the
temperature dependent model. In this way we verify that the collapse transition
of interacting self-avoiding walks and trails are indeed in different
universality classes in two dimensions.
