Um going to say the following bits with two caveats. 1) This is how I learned to roleplay, how I prefer to roleplay and I fully understand that others may enjoy this passtime differently. And 2) I'm in no way trying to say badwrongfun, but feel the opposite is being said of how I enjoy things.
There is a difference if you care about roleplay continuity if character.
Continuity is what you make of it in PFS.
Examples & blatant rhetoric:
Do you refuse to sit at tables with characters who have gone through the same scenarios that you have, but with a different group?
If not, do you tell them they're lying when they tell you about it - just to keep it "in character" as your character should have seen them there and they obviously weren't ... Probably not.
We are at 7 Season of PFS now, and not all of us have been playing since the beginning.
I played a Season 0 last night with a character than had GM credit & had to be completely ret-conned because of PFS changes. Should I make sure to break the 4th wall appropriately to ensure "continuity"? ... Probably not.
If an NPC dies in a scenario you've played and then you end up playing an earlier scenario with that NPC, do you disrupt the table in character to try to resolve the continuity issue? ... I would hope not.
EDIT: removed what may have been construed as a personal attack on another forum member at the cost of another opportunity for a Princess Bride quote lost...