I think that your idea of setting up the dummy transitions in VDDT for TELSA is a good one for a couple of reasons:
1. It is good to have a clear record of all of your model assumptions in one place and the VDDT UI is a much easier to interpret and review a model’s states and transitions with than the TELSA UI.
2. It is easy in VDDT to turn off certain transitions using Run | Settings | Options | Disable some transitions
3. You will only need to move these transitions into TELSA once, as opposed to having to reimport your pathways from VDDT once you have done some work in TELSA.
Hope that helps.