posting error from POS to 11 -12 quickbooks

Proshop

i had an error when posting from POS to 11 -12 quickbooks I coverted the error file to excel and changed the tax code and amended the amounts to be correct. when I try and import the file back it says "0 file imported, 25 errors. Can anyone suggest what could be going wrong.

Proshop

Hi Kevin, Thanks for your reply. Cant remember the error code although it was a tax file related. I found the item in the error file opened as an excel file and changed it to the correct code and trying to import it as a xls file. This is where it wont allow the new changed file to get updated.  Darren

Proshop

Hi Andrew thanks for your reply. I have changed the tax code and updated the pricing and tax amounts saved as an excel file. Darren

Proshop

Thanks again Kevin, how do I covert an Excel file to iif file? Darren