>>531830956
>>531831292
huh, ok so it's a little weird
you can go back 1 time to an "and -1", for example if you had cleared 30, like me, you can go back to 21, but then you're not allowed to go back any further. can't go back further either unless you clear it manually
also, does not touch your total score (as listed on the profile page)

"resetting the challenge" gets you back to the 30 being cleared and can start from 31 again, unless you manually choose to start from 1 by clicking it

i hope that makes sense
basically it's the best possible reroll system where you lose nothing and can always keep going up from your limit