Why simplify lesson is available only for some lessons

I’m not seeing a pattern here. Sometimes “Simplify Lesson (AI)” is available, and sometimes it’s not. Can anyone explain that? I show two different languages here, but from what I can see it’s not the language selection that is the variable.

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Hi @vernmartin !
The Simplifying feature should be available to all lessons except those which are already simple (beg1-beg2 level) and those which are larger than 3k words (as far as I remember).


That seems to be it. I never share the lessons I import and rarely think about rating the level of difficulty. I’ve been setting the level higher now and simplify always seems to be available. Thanks.