Originally Posted by EvilAngel

Maybe, i remember at least one card replacement with an earlier E gacha card

That's what made me think they probably just swapped out one of the earlier routes. I'm not restarting to verify it, but most of us here are pretty far in the explore story.

Sometime, we should ask one of the newer players to confirm for me. Alicetbs is only on 2-4. She might be a good person to check stages 3-1 through 3-4.