Payment type shows when you select Write off selected. Should not be a choice.
On the pat_paycollect page there are options to pay a fine, write off a fine, pay an individiual fine, or write off an individual fine. Clicking a button brings up the corresponding form, with the following ID's and names: Pay selected fine: id="payfine" name="payfine" Write off selected fine: id="payfine" name="payfine" Pay Individual fine: id="payindivfine" name="payindivfine" Write off individual fine: id="woindivfine" name="woindivfine" Write off selected doesnt not have its own unique id and name. This makes it difficult to devise JavaScript that works on one but not the other.
I've tested and the payment type is on longer visible when Writeoff selected is used.