In Revit, A change in a linked model is not reflected until that model is reloaded. Only then should Enscape look for changes in links and re-export them.
Additionally, when there is a sync to central, this does not update links so enscape shouldnt be looking for changes in linked models at the moment either.
Currently, moving a column in the host model will trigger Enscape to look for changes in all models and export all of them. Its inefficient - can we change that?