Combining training load between two Garmin watches?

I just got a Garmin Forerunner 945LTE.  My other watch is a Fenix 6 Pro Solar.  For some reason my Forerunner is not taking into account all my prior history from my previous watch.  The new watch does not continue the 7 day load from the previous Garmin.  It's like it is starting from scratch.  Is that normal?