[Koha] written off amount reflect in credit after return of book

Hello Due to covid 19 we have written off several fines and extended the due date with bulk due date extend option. When the user is returning the books the same written off amount reflect in his/her account under CREDIT. Once void all credit then it does not reflect anything. Please suggest Koha 20.05.04 With Regards, Vinod Kumar Mishra, Assistant Librarian, Biju Patnaik Central Library (BPCL), NIT Rourkela, Sundergadh-769008, Odisha, India. Mob:91+9439420860 URL: http://vinod.itshelp.co.in/ ORCID ID: http://orcid.org/0000-0003-4666-7874 *"Spiritual relationship is far more precious than physical. Physical relationship divorced from spiritual is body without soul" -- Mahatma Gandhi*