Importing coded statements is very useful if you wish to import a few months of bank transactions from after your conversion date. There may also be cases where it's preferable to using rules. As well as entering an account code for each transaction, you have to enter the Tax Rate/Code.
It might seem sensible to use the Tax Code in the Chart of Accounts (CoA) exported as a csv file. We did this since it is then straightforward, using VLOOKUP in Excel, to attach the Tax Codes to the items in the coded bank statement.
However this failed since, for example, the CoA has "VAT on Income (17.5%)". The correct Tax Code to use is "17.5% (VAT on Income)", which appears when you export the CoA as a PDF file. We were not amused!
Perhaps I should have been more careful in checking what is expected. However, it still seems odd that the csv version of the CoA file has the wrong version of the Tax Codes.
In a similar vein, I think it would be useful if there was an option to import a coded bank statement with no Tax Codes. This would apply if all the transactions are to be coded with the default Tax Codes for the accounts.