MacOS Contacts App — How can I tell to which address book an entry belongs? I have two entries that appear identical to each other. One is in the iCloud address book. The other is On My Mac.

I have opened up both entries, but I can't tell which is which.

Is there a way to discern this?

Note

I have been opening both entries and editing one to see which is which. I'm hoping for a better solution than this.

Show Groups

The Show Groups option displays a list of groups on the left. This isn't what I am looking for. Ideally, if opening up a contacts card will show you a list of groups to which that card belongs.
I'm not sure if this is obvious, but in the Contacts App, Click on View->Show Groups.  Then you can select the contact in either group?