私有跟单开票记录结算改成回款差额=实收金额-未结算金额

src/views/receivable/documentary/documentaryRecord.vue

@@ -283,7 +283,7 @@ const uploadImage = async (file) => {
 /** 计算实收金额与应收监管保费的差值，并将结果赋值给付款差额字段 */
 const handleChange = async () => {
   if (countForm.value.actualReceivedAmount > countForm.value.remainSettlementAmount) {
-    const num = await calSub(countForm.value.actualReceivedAmount, countForm.value.receivableSupervisePremium)
+    const num = await calSub(countForm.value.actualReceivedAmount, countForm.value.remainSettlementAmount)
     countForm.value.settlementPaymentDifference = num
   } else {
     countForm.value.settlementPaymentDifference = 0