Most likely the "donor" car was salvaged but it is unlikely that your car (after build from donor car) was salvage.
Each state in our country has different rules for registering these cars. We have no consistancy between states, it is as if they were different countries... Some states make you bring forward the VIN from the donor car. If that donor was "salvage" which is very common, then the salvage brand remains. Some states have "specialty construction" titles or "assembled vehicle" titles. I suspect that is what yours is, an "assembled vehicle" or something similar.
At any rate, what it was is not important. What it IS - your finished CMC is all that matters. Drive often, have fun and best wishes for the new year!
angela