There may be occasions when you are upgrading that you need to uninstall our extension completely. Follow these steps.

1. Disable cache
2. Remove files from app/code/local/community (matrixrate) or app/code/local relating to the extension. These may be under a Webshopapps or Auctionmaid banner
3. Remove the relevant .xml file from app/etc/modules
4. Run the workaround to delete the extension from the list of shipping carriers – see here
5. Verify removal on admin/frontend
6. Enable cache

All our extensions sit in the app/code/local or app/code/community areas, so there is no impact on core code.