https://help.myob.com/wiki/x/jYyi
BankLink Practice
When importing a BankLink Notes file, Un-Presented Cheques (UPC's) will be rejected if the transaction already exists.
To fix this you'll need to clear the transfer flags for a specified period, then you'll be able to re-import the file.
Importing BankLink transactions into MAS
Error: "Unable to import BankLink Notes file - Rejected due to match not found"
Transferring data which has already been transferred in BankLink Practice
Error: "301 interrupted" when importing or exporting transactions in BankLink Notes Online
BankLink Online statuses