Utillize the trial period of a 3rd party tool to do so. Export your data out, modify the Sales Term field, reimport them back in bulk.
https:// transactionpro.grsm.io/qbo
| RefNumber | Customer | TxnDate | DueDate | ShipDate | ShipMethodName | TrackingNum | SalesTerm | Location | Class | BillAddrLine1 | BillAddrLine2 | BillAddrLine3 | BillAddrLine4 | BillAddrCity | BillAddrState | BillAddrPostalCode | BillAddrCountry | ShipAddrLine1 | ShipAddrLine2 | ShipAddrLine3 | ShipAddrLine4 | ShipAddrCity | ShipAddrState | ShipAddrPostalCode | ShipAddrCountry | PrivateNote | Msg | BillEmail | BillEmailCc | BillEmailBcc | Currency | ExchangeRate | Deposit | ToBePrinted | ToBeEmailed | AllowIPNPayment | AllowOnlineCreditCardPayment | AllowOnlineACHPayment | ShipAmt | ShipItem | DiscountAmt | DiscountRate | TaxRate | TaxAmt | DiscountTaxable | LineServiceDate | LineItem | LineDesc | LineQty | LineUnitPrice | LineAmount | LineClass | LineTaxable |
| 101 | Janice Johnson | 01/10/2020 | | 01/12/2020 | Ground | | Net 30 | | | 110 Main Street | Suite 2000 | | | Dallas | TX | 99875 | | 110 Main Street | Suite 2000 | | | Dallas | TX | 99875 | | Special Handling | Thank you for your order! | [email address removed] | [email address removed], [email address removed] | | | | 0 | N | Y | N | N | Y | 12 | Shipping | | 0.02 | | | Y | | MP3 Player | Blue MP3 Player | 2 | 55 | | | TAX |
| 101 | Janice Johnson | 01/10/2020 | | 01/12/2020 | Ground | | Net 30 | | | 110 Main Street | Suite 2000 | | | Dallas | TX | 99875 | | 110 Main Street | Suite 2000 | | | Dallas | TX | 99875 | | Special Handling | Thank you for your order! | [email address removed] | [email address removed], [email address removed] | | | | 0 | N | Y | N | N | Y | 12 | Shipping | | 0.02 | | | Y | | Leather Case | Leather Case | 2 | 10 | | | TAX |
| 102 | Leonard Walker Inc | 01/10/2020 | | | | | Net 30 | | | 9 Winding Road | | | | Winchester | NY | 12345 | | 9 Winding Road | | | | Winchester | NY | 12345 | | | Thank you for your order! | [email address removed] | | [email address removed] | | | 0 | Y | N | N | N | Y | | | | | | | Y | | Handhelds | Portable Game Player | 1 | 100 | | | TAX |
