Java - "extends ParentClass" won not inherit ParentClass attributes with @MappedSuperClass?

@MappedSuperclass
public abstract class Auction {
    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    private long id;
    @Column(nullable = false)
    private String title;
    @Column
    private String description;
    @Column
    private String category;
    @Column(nullable = false)
    private long sellerId;
    @Column
    private String urlPicture;

}

@Getter
@Setter
@Entity
@NoArgsConstructor
@AllArgsConstructor
@Table(name = "inverseauction")

public class InverseAuction extends Auction{

    @Column(nullable = false)
    private int startingPrice;

    @Column(nullable = false)
    @JsonFormat(shape=JsonFormat.Shape.STRING, pattern = "dd-MM-yyyy'T'HH:mm:ss[.SSS][.SS][.S]")
    private LocalDateTime expiryDate;
}

The only attributes my @GetMapping returns are startingPrice and expiryDate , for some reason the Auction attributes are invisible to Auction.

My only guess is to add some SpringBoot Annotation but I don't know which one, I tried some but won't work