Originally Posted by Myhthreindeer
You should not be able to convert a previous-to-Patch 5 campaign to Honour mode - I can only imagine the coding difficulties that would have entailed

Apparently zero coding difficulties because there is already a mod on the nexus that was released one day after the patch that does exactly that.
https://www.nexusmods.com/baldursgate3/mods/4743

It's bad design to make fixes to exploits exclusive to a specific difficulty that people in an active playthrough can't apply to their save file if there is no technical reason for that restriction. A new playthrough to access bug fixes and legendary actions is a complete waste of time if I'm already sitting in act 3. I'm just not going to play the game until they decide to do the sensible thing which is to implement a toggle for the honour mode ruleset. If they don't, then my playthrough stops here.