Did they send you a W-2 or some other tax reporting document? If you were not paid by them in 2016, then you have nothing to report from them in 2016.
Yes I have a w-2 from them.
When I began my taxes, I notice that there was an option for adding new employment. I didn’t register what that was at first because I still have my full-time job as well. So I imported my info as it stood last year. I need to add my part time job. Should I clear my info and start over?
Again, if you have a W-2 just add it. If you have some other tax reporting document for that employment, you'll add it when asked for it by the program. Starting over will not magically "add a new employer". You still have to enter the information manually.
To add another W-2, follow the steps below:
This will enable you to move on to add multiple W-2's and you can complete the importing steps below.