Is there any way to delete entities from child entity using JPA? - spring-boot

Question

I have 3 tables Table A, B, C. Table A is associated #OneToMany with Table B. Table B is associated #ManyToOne with Table C. Now when I find by Id of Table A, I am able to get details of A,B,C. But when I persist / delete, It is affecting only Table A&B. Table C is unaffected.
Is this possible in JPA to delete entities from child entity? Googled lot, but could not find any clue.
Below are the entity models of all the three tables
#Entity
#Table(name = "FEATUREMASTER")
#JsonIgnoreProperties({"hibernateLazyInitializer", "handler"})
public class FeatureMaster implements Serializable {
/**
*
*/
private static final long serialVersionUID = 1L;
#Id
#Column(name = "FGID")
private String featureid;
#Column(name = "FEATURENAME", nullable = false, unique = false)
private String featurename;
#Column(name = "DESCRIPTION", nullable = true, unique = false)
private String description;
#Column(name = "LIBNAME", nullable = true, unique = false)
private String libname;
#Column(name = "ISENABLED", nullable = false, unique = false)
private String isenabled;
#Column(name = "EDRULEGRP", nullable = true, unique = false)
private String edrulegrp;
// Do Not use - [orphanRemoval = true & CascadeType.ALL]- If used, deletion is not happening
#OneToMany(cascade = {CascadeType.PERSIST, CascadeType.MERGE})
#JoinColumn(name = "FGID")
private List<CfgMaster> parameters;
// Getters and Setters
}
#Entity
#Table(name = "CFGMASTER")
public class CfgMaster implements Serializable {
/**
*
*/
private static final long serialVersionUID = 1L;
#EmbeddedId
private CfgMasterPK id;
#Column(name = "CONFIGNAME", length = 45, nullable = true, unique = false)
private String parameter_name;
#Column(name = "CONFIGTYPE", length = 20, nullable = true, unique = false)
private String type;
#Column(name = "SUBPARAM", nullable = true, unique = false)
private Integer subparam;
#Column(name = "CONFIGDESCRIPTION", nullable = true, unique = false)
private String description;
#Column(name = "CONFIGLIMITFROM", nullable = true, unique = false)
private String from;
#Column(name = "CONFIGLIMITTO", nullable = true, unique = false)
private String to;
#ManyToOne(cascade = {CascadeType.ALL}, optional = true, fetch = FetchType.LAZY )
// #ManyToOne(cascade = {CascadeType.PERSIST, CascadeType.MERGE}, fetch = FetchType.LAZY)
#NotFound(action=NotFoundAction.IGNORE) // This is required to handle when no CfgData is found
#JoinColumns({
#JoinColumn(name = "FGID", insertable = false, updatable = false),
#JoinColumn(name = "DATAKEY", insertable = false, updatable = false)
})
private CfgData cfgData;
//Getters and Setters
}
#Entity
#Table(name = "CFGDATA")
public class CfgData implements Serializable {
/**
*
*/
private static final long serialVersionUID = 1L;
/*#EmbeddedId
private CfgDataPK id;*/
#Id
#Column(name = "FGID")
private String fgid;
#Id
#Column(name = "DATAKEY")
private String datakey;
#Column(name = "EPID", nullable = false, unique = false)
private int epid;
#Column(name = "RESERVED1", length = 45, nullable = true, unique = false)
private String reserved1;
#Column(name = "VALUE1", length = 100, nullable = true, unique = false)
private String value1;
#Column(name = "VALUE2", length = 100, nullable = true, unique = false)
private String value2;
//Getters and Setters
}
The problem I am facing is, I am not able to delete/save the entities of CfgData by passing FeatureMaster's primary id. Any operation I do is affecting only parent &child, not the grand child (CfgData) I tried a lot googling, but I cant find the solution.