this.apollo
     .watchQuery({
        query: getAllMembers,
      })
      .valueChanges
      .pipe(
          tap(returnedData => {
            ... does some stuff to one of the returned properties...
          })
        )
      .subscribe(result => {
          this.dataSource.data = result.data['getMembers'];
          console.log('errors in getAllRecords', result.errors)
        });

this.apollo
      .watchQuery({   // This watchQuery is somehow calling the list's
            // watchQuery.  There is no code anywhere that does that and
            // there were no problems with the original REST code.  This is
            // a GraphQL thing.
        fetchPolicy: 'network-only',
        query: getMemberByID,
        variables: {
          member_id: member_id,
        },
      })
      .valueChanges
      .subscribe(result => {
          let data = result.data['getMember'];
          this.addData(data, skillNames);  // Call function below to populate modal.
          console.log('errors in view-member', result.errors);
        });