Hi [mention:da4b70fb9b2e4c109418d57768dea504:e9ed411860ed4f2ba0265705b8793d05] - we added this feature in MultiTerm 2017 SR1, so input models should now work. We have delivered a few stabilisations in a recent MultiTerm cumulative update - https://gateway.sdl.com/apex/communityknowledge?articleName=CUs-MultiTerm2017SR1 and will deliver the same enhancements in a cumulative update for Studio as well.