Hi Kerrie_N,
This one's a bit tricky! If you're using AccountRight and you need to enter a sale with an item-based layout as tax inclusive but print it out with tax exclusive prices (or the other way around), it can cause rounding issues beyond two decimal places (up to six decimal places) when printed. This happens because of the calculations involved in removing the tax.
Not sure how this would work with third-party software, but hopefully, someone in the community can share their experiences with this, too!
For more info on managing the import process, check out the help page here. Import and export fields
Regards,
Earl