Boss knowledge obtained from quests or purchased from the shop will be locked at C level

Bug Name:

Boss knowledge obtained from quests or purchased from the shop will be locked at C level​

Bug Description:

https://bdocodex.com/us/quest/601/1/?sl=1
https/bdocodex.com/us/quest/7225/1/?sl=1
This is just an example, but as long as the Boss knowledge that can be quests from the task is all locked in the C level.

https://bdocodex.com/us/npc/41111/1/?sl=1
https://bdocodex.com/us/npc/42119/1/?sl=1
https://bdocodex.com/us/npc/42016/1/?sl=1
Intimacy knowledge store.
For example, Muraka and Quint, their knowledge can only be obtained from the shop but no matter how many times they are deleted and regained, they will always be C-level.

The knowledge gained from the talk works normally.​

How to reproduce/proof:

Get boss knowledge from any quests, or buy boss knowledge from the shop.​