Outlook 2016

In the past, when I have imported the Hebrew calendar into Outlook, it went to my regular Outlook Calendar which syncs to my phone and tablet.  However, when I went to do so with the 2020 calendar, now using Outlook 2016, it created a new calendar rather than putting it iinto my regular Outlook calendar.  Anybody know how to address this?  I don't want to keep referring to 2 different calendars.