Steps to reproduce:
1. Set up an active Dewpider with the Bubble attack.
2. Use Bubble.
3. Ensure that Dewpider survives the opponent's turn.
4. On your following turn, evolve the same Dewpider to Araquanid FLI.
5. Use Bubble Trap.
OBSERVED: Bubble Trap's damage is not boosted (it remains at 40).
EXPECTED: Bubble Trap's damage should be boosted to 120, since "1 of your Pokemon used Bubble during your previous turn".