Mail merge with tabular data

<p>Need help to skip some of the group header rows when group data span across multiple pages. The data contain cat, account number, account info, sale date, sale amount. A table with multiple group headers was created to print cat, account, account info, and greeting paragraph. For each group (cat, account) the sales records can span multiple pages, but can't figure out how to skip group header of greeting paragraph.</p>
<p> </p>
<p>account number: 12345</p>
<p>address 1</p>
<p>city, state, zip</p>
<p> </p>
<p>Dear customer,        

---

a greeting paragraph should be skipped on same group except 1st</p>
<p>greeting greeting</p>
<p> </p>
<p>Sale date      sale amount</p>
<p>1/1/2015       $40000</p>
<p>2,3,2015       $50000</p>
<p> </p>
<p> </p>
<p>Regards,</p>
<p> </p>