Automatic Success/Failure: Some card effects make an investigator automatically succeed or automatically fail a skill test. If this occurs, depending on the timing of such an effect, certain steps of the skill test may be skipped in their entirety.

• If it is known that an investigator automatically succeeds or fails at a skill test before Step 3 (“Reveal Chaos Token”) occurs, that step is skipped, along with Step 4. No chaos token(s) are revealed from the chaos bag, and the investigator immediately moves to Step 5. All other steps of the skill test resolve as normal.
• If a chaos token effect causes an investigator to automatically succeed or fail at a skill test, continue with Steps 3 and 4, as normal. - FAQ, v.1.7, March 2020

Q: Heart of the Elders: the resolution from part A states that "Investigators may not spend experience or alter their decks in between" parts A and B. Does this apply to purchasing level 0 cards to maintain a legal deck size if cards have been exiled? A: In that situation, you may “purchase” level 0 cards to maintain a legal deck size. (But this is the only alteration allowed at that time.)

Q: I have a question about what is a scenario. The rules doesn’t contain the strong definition of that. This creates a question for The Forgotten Age campaign. The campaign contains the scenario divided to two parts where you cannot purchase cards in between the two parts. So, are these two different scenarios with an additional restriction or the both parts are the same scenario and the restriction about purchasing cards is merely a reminder that players haven’t finished the scenario and cannot change their decks? It is vital to understand how Déjà Vu works for cards that were exiled in the first part. A: Heart of the Elders Part 1 and Part 2 from The Forgotten Age are considered to be two parts of one big scenario, which is why investigators can’t spend XP or alter decks before completing Part 2. If you exile a card in the first part, you can’t use Déjà Vu to discount and repurchase that card until you complete part 2. (Rules Form, December 2023)