CK II - Empire Inheritance bug v3.2 Iron Century

[Fredrick the Great]

One line summary of your issue
Empire Inheritance bug v3.2 Iron Century

Game Version
3.2 Iron Century

What expansions do you have installed?

The Reapers Due,
Way of Life,
Charlemagne,
Rajas of India,
Sons of Abraham,
The Old Gods,
The Republic,
Legacy of Rome,
Sword of Islam

Do you have mods enabled?
Yes

Please explain your issue is in as much detail as possible.
As the Holy Roman Emperor I have the princely elective system. I don't want to inherit the empire with my next character and only my kingdom level titles. However, if the emperor loses his title all his ducal and county level titles default to primogeniture. As a result, regardless of who inherits the kingdoms, even if the kingdoms are also en elective inheritance system; all my counties and duchies will go to my closest male relative according to primogeniture. (Please note in the uploaded file I destroyed my duchies thinking that might fix it, but it did nothing, also the only mod I am using is a map graphics mod.)

Steps to reproduce the issue.
Form a princely elective empire a kingdom and a duchy. Lose the election for the empire but win one for the kingdom for one of your younger children.

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[redtide]

This still happens in 3.3.3 and is very frustrating.

When losing an election for the highest title, your lower level titiles should retain their original inheritance laws according to their duchy (when losing election for a kingdom) or kingdom (when losing election for an empire).

Consider the following scenario:
I am Holy Roman Emperor and King of Bavaria. The Kingdom of Bavaria has Seniority succession because I'm trying to consolidate territory or because some old dude is awesome and my son is an idiot, who knows. I choose the old dude who is set to inherit Bavaria as my candidate for the HRE, and as long as he is winning the election all is well: the lower level titles (duchies and counties) dynamically flip their succession to elective so that they go to old dude. But if the electors turn on old dude and he starts losing the election, then the lower level titles (duchies and counties) dynamically flip their succession to primogeniture and will go to idiot son, even though Kingdom of Bavaria still has seniority succession. When my character dies, I lose the Kingdom of Bavaria and have to play as idiot son [EDIT: I get to play as old dude, but I lose my duchies and counties to idiot son, except for a single county if old dude was unlanded]. My only recourse is to change Kingdom of Bavaria to elective succession and switch its heir back and forth between old dude (when he's winning HRE election) and idiot son (when old dude is losing HRE election). But even then, my only consolation upon losing HRE election is that I get to keep Bavaria [EDIT: my duchies and counties]. I still have to play as idiot son even though I really want to play as old dude.

Also, note that when you become king, you lose the ability to change the succession laws of duchies. It might be nice to retain that ability. Note that there is another bug that causes your capital duchy to leave your dynasty if you lose an election for a kingdom or empire (as though it were hardcoded to ignore succession laws and instead just follow the kingdom or empire title). I had to write an on_action effect to re-direct it to my dynastic heir upon succession.