Dunning of negative(credit) amount

Hello,

I have below queries regarding dunning in case of negative amount item :-

Is it possible that dunning of negative amount should not happen ?

does the minimum amount limit on the dunning procedure includes negative amount of item to be dunned ?

If total open amount in dunning is positive and it also includes one credit item, can it be possible  that credit item is not getting dunned ?

Thanks in advance!

Regards,

Nachiket