How can nonrecoverable tax be automatically capitalized into the item cost when transferred to FA?

The rules set up in the Post Accounting Program for ‘Mass Addition Create’ and Accounting Class Events include ‘Non-Recoverable Tax’.
However, when I transfer an AP invoice that contains both item lines and non-recoverable tax to Fixed Assets, they are separated into two individual lines with status NEW. How can the non-recoverable tax be automatically capitalized into the item cost?