Anyone ever use/implement CCH SureTax with ARM? It's adding a line item for the tax on the SO (fine, I can deal with that), then when invoiced adding a new line for the same amount on the Invoice. The SureTax script appears to be removing the line from the SO, then creating a new transaction line on the Invoice. I believe this is how they handle potential changes in tax rates between the date of the SO and the date of the Invoice. But with ARM this could be quite bad, because the invoice insists on creating a new Rev Arrangement for the tax line, and it potentially doubles the tax.