AnkiApp, bulk import to current deck

I am trying to bulk import a new deck from a CSV into a deck that is already on my Ankiapp device.

Is this possible? Or do I have to create a new deck every time I bulk import a list of words from a CSV?

I am on an iPhone.

Are you indeed talking about an app named AnkiApp? If so, that is one of a few ripoff Anki apps. See here: