jrebsamen_sto
If it was not a local file you could have achieved it through Data Import Step of Multi Action. Sadly it does not support import jobs created on local file. I am not sure if you could move the file on a file server and try creating an import job and use that in Data Import Step of Multi Action.
I would suggest that you upvote an existing request or raise an influence request to add the local file import jobs to Data Import step of Multi Action (currently local file is not supported)
Hope this helps !!
Nikhil