Matrix table expand option not working properly

I have 3 tables.

Table 1:

Incident Id, Title

Table 2:

Change Id, Title

Table 3:

Change Id, Incident Id, change title, incident title

Relationship between Table 1 and Table 3: 1 to Many

Relationship Between Table 2 and Table 3: Many to Many

As one change can have multiple incidents and one incident may be mapped with multiple changes. Now when I plotted the matrix table and added change id and incident id as rows it is fine. But I need to show their corresponding titles as well.

1. When I am selecting change title in values it is showing the change title in child incidents too

2. when I am expanding the rows and when I am adding incident title in values column it is showing only title for incidents 

3. When adding both it is showing in two different columns.

Please help