Invoice Discount Account

Invoice Discount Account

Is there a way to change the account used for Discounts applied to an invoice? The current Discount account (ZB native account) type is an "Income" type. I would like to change it to "Other Income", but that is not possible, I am assuming because it contains transactions. When I started with ZB at the beginning  of the year, I imported an account for Invoice Discounts which is of type "Other Income" and thus is listed at the end of the P&L instead of the normal income section.

Feedback appreciated
LThib