Investigate problems with a vanilla Imperator conversion

[IhateTrains]

https://discord.com/channels/612683871112396800/692883287336681592/1400098932801011896

• If you convert the game with the date set to 867, the development is wacked, guess it conflicts with the vanilla one.
• There are patches of land that have Christian and Muslim faiths, despite them not existing in Imperator.
• The streamer didn't liked [...] that Innovations are equal or even lesser than other's.

Problems found by me:

• Conversion with a 867.1.1 bookmark date resulted in some counties in Arabia being held by a Muslim ruler, which IIRC is not intended

Link to the save:
https://mega.nz/file/WwZyUIaB#aAS0Vd0P0hurVdY7F4DWoEqD20alyXD9imkyUQ1DjIg

[IhateTrains]

Civilization in I:R:

[IhateTrains]

Dev in CK3 after entering 867.1.1 as the bookmark date. Seems to be fixed: