The files in the subdirectory: trade/international-merchandise-trade-data-by-commodity-classification/
are very useful. I have not, however, been able to find any concordances (without paying the WCO for them) to between previous versions of the HS. If I am not mistaken, they are now on about their 5th round of revisions. Could we get comparable concordances between prior versions of the HS10, please?
I asked both International Trade Division and Standards Division and neither has concordances between prior versions of the HS10. International Trade had produced the file you found (2007-yyyy-codes-change.zip) and here is the response they provided:
“The concordance file you are referring to was produced in light of the major HS re-structure in 2007. This file is not produced on an annual basis. The next major HS modifications from the WCO are scheduled for 2012.”
Sorry I couldn’t be of any further assistance.