i didn't get it

i'm trying the first method and when I move the second modifier keyframes lower, my keyframes disappear and the cloth stops moving. Where is the problem? my loop starts at 116frame and the loop length is 193, so when I do the -193 shift, half of the keyframes are gone, but the other half stays.


same problem with the second method, when I have to subtract the number of frames in the loop from the first frame number, you got 36 and mine is -77, what do I do there?