Solution : https://service.sap.com/sap/support/notes/723989 (SAP Service marketplace login required)
Key words :
attached advance corrections manually, badi subscreen, transaction miro, terms miro, mm_vendor_dialog_comp_export reason, program error, solution import, support package, disappears, badi_fdcb_subbas0
Related Notes :
720526 | MIRO: Field return of BADI subscreen does not work |