I'm unsure if this is a bug or by design, but today as I was going through the N3 grammar schedule list I started this section:
And I was taught 4 new terms so to speak in the guided lesson, but I was only quizzed on 3 of them and only 3 new terms were added to the grammar schedule, the grammar term for みたい which was in the lesson was not quizzed at all in the subsequent quiz nor was it added to the corresponding schedule as is usual.
I just found it to be a bit odd, as usually all the terms taught in these guided lessons are added to the schedule at the end of the lesson. I reckon it might be because of the similiarity of the 見える and みたい terms, that みたい was omitted from the schedule despite being on the guided lesson, or it may be something different that I haven't accounted for at all. Just in case this was not intended, I thought I should bring it to some attention.
Well I'll be, I think you're right! I added it in just now. I cannot recall if that will make it automatically propagate out to all prebuilt schedules, but you may want to manually add it from the dictionary results.
It came up today as I started the next subsequent guided lesson on the N3 Grammar schedule-list:
So it seems as long as you have grammar expressions left on the guided lesson it will get automatically added to your schedule once you start the next section.