Raid Parameter Editor does not keep changes after save

[CarlosRamirezGriego]

Describe the bug
When I edit a Den, in the Raid Parameter Editor, the Save Action is ignored and the new values are not kept.

Test Data
Pokemon Sword: 1.2.0
PkHex Version: 20/06/19 Update
Checkpoint: v3.7.4

To Reproduce

1. I saved the game in front of a Den with a wishing star (specifically this one: https://serebii.net/swordshield/maxraidbattles/den105.shtml)
2. I Exported the Main with Checkpoint
3. I imported the Main into PkHex
4. Loaded the SAV section
5. Clicked the "Raids (DLC 1)" button
6. Selected Den 028
7. Edited the Seed for: 61B1EC4E2E63CBCA
8. Edited the Starts for: 4
9. Edited the Randroll for: 90
10. Edited the Type to Common (also tried as Rare)
11. I tried by setting manually the flags and leaving the default (Not an Event)
12. Saved the changes
13. Opened again the "Raids (DLC 1)" window
14. Inspected the Den 028

Expected Results
The Den should display the information I set (For a Luxray with HA, UltraShiny and 6 IVs)

Actual Results
The Den is reset to its original value.

[Abyzab]

#2872, you're not using the latest build and this issue has been addressed a few times