Re-imported model not added to components pane

To reproduce:
1) Add a model asset (for instance an obj file) and import it
2) The model is shown in components pane
3) Press ctrl-z a few times and the model is gone from the components pane
4) Re-add the model and select 'Skip' when asked to overwrite the files
5) The model is not shown in components pane

Note that overwriting the files will add the component successfully, so that is a simple workaround.