I'm at the last chapter of Dragon Age 2 when I read somewhere online that my last choice for the Witch Hunt DLC didn't carry over to DA 2 if I wasn't patched. So I tried recreating my save and starting a new game, but halfway through the first chapter I realized that going through ALL those repetitive dungeons for 3 chapters again might not be worth it.
I have a gut feeling that the backstory for my DA 2 character and its influences from DA:O is just stored in the character file. Is there a way for me to change one particular event from my DA:O backstory (particularly, the part where I leave with Morrigan through the mirror) so that I won't have to go through the whole game again?