Strange FSRS simulator result after setting "Ignore cards reviewed before"

Anki FSRS
1

Hello, I previously posted a similar question on Reddit, but I later realized I misunderstood part of the problem and the question haven’t be solved. So I’m posting again, sorry if this causes any inconvenience.

I found that when I select “Ignore cards reviewed before” and then optimize FSRS, the simulator shows two issues:

  1. The number of memorized cards decreases
  2. New cards appear in simulation even I don’t have any.

For example, here is the information and simulation result for one of my decks:
(#1 = 0 new cards/day, #2 = 500 new cards/day)

A2
A2686×560 23.3 KB

A3
A3679×587 13.2 KB

A1
A1678×327 11.8 KB

Then, I changed “Ignore cards reviewed before” to 2025/03/17 and optimized.
The result became:

A4
A4686×601 19.1 KB

A5
A5685×601 14.9 KB

My guess is:

  1. The simulator excludes cards reviewed before the date from memorized cards. (I’m not sure if this is intended behavior.)
  2. The excluded cards are somehow treated as new cards during the simulation.
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2

@A_Blokee @L.M.Sherlock have you guys fixed this issue?

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3

Not yet.

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4

No problem, but please add a link for us your other post.

1 Like