Habe mal den Fehler weiter eingegrenzt, das Problem kommt daher, dass obwohl das Formular über "post" funktioniert, das Postarray nach dem "submit" leer ist. So können die Daten nicht weiter verwendet werden.
Warum allerdings das Postarray leer ist, erschließt sich mir noch nicht so ganz.
{config_load file="$language.lang.conf" section="global"}
{config_load file="$language.lang.conf" section="order"}
<div id="displayLayer" class="displayLayer"></div>
<form name="order" action="confirmation.php" method="post">
<table width="98%" border="0" cellspacing="0" cellpadding="0" class="page_head">
<tr>
<td class="productPageTitle">{#order_title#}</td>
</tr>
<tr>
<td height="10" class="comment1">{#global_legend_hint#} <a href="#" onclick="javascript:displayLegend(event)">{#global_legend_hint2#}</a>{#global_legend_hint3#}</td>
</tr>
</table>
<div class="spacerLine15"></div>
<table border="0" style="float:left;" class="loginbox">
<tr>
<td colspan="2" class="q1">{#global_your_data#}</td>
</tr>
<tr>
<td> </td>
<td style="padding-left:20px;">
{$selectedDeliveryAdressArray.da_firstname} {$selectedDeliveryAdressArray.da_lastname}<br />
{$selectedDeliveryAdressArray.da_street}<br />
{$selectedDeliveryAdressArray.da_postcode} {$selectedDeliveryAdressArray.da_city}<br />
{$selectedDeliveryAdressArray.da_country}
</td>
</tr>
<tr>
<td> </td>
<td style="padding-left:20px;"><a href="account.php" class="link_deliveryadress">{#global_change_delivery_adress#}</a></td>
</tr>
</table>
<table border="0" style="float:left;margin-left:30px;" class="loginbox">
<tr>
<td colspan="3" class="q1">{#order_payment_term#}</td>
</tr>
{section name=pT loop=$paymentTerms}
<tr>
<td> </td>
<td width="12"><input type="radio" name="pt" value="{$paymentTerms[pT].paymentTerm}"{if $pt == $paymentTerms[pT].paymentTerm} checked="checked"{/if} /></td>
<td style="font-size:11px;">{$paymentTerms[pT].paymentDescription}</td>
</tr>
{/section}
</table>
<table border="0" style="clear:left;margin-top:15px;" class="loginbox">
<tr>
<td colspan="2" class="q1">{#order_products#}</td>
</tr>
</table>
<table border="0" style="border-collapse:collapse;" class="prod_listing">
<tr>
<th></td>
<th>{#global_productdescription2#}</td>
<th>Variant</td>
<th>{#global_type#}</th>
<th class="pos_status">{#global_status#}</td>
<th>{#global_quantity#}</td>
<th class="pos_priceperpiece">{#order_price_per_piece#}</td>
<th class="pos_priceforpos">{#order_posvalue#}</td>
</tr>
{assign var="product" value=$ProductList->getProductArray()}
{section name=p loop=$product}
{assign var="myProduct" value=$product[p]}
<tr valign="top">
<td class="pos_del"><a href="order.php?d={$myProduct->getProductID()}" class="link_arrow">{#global_delete#}</a></td>
<td class="pos_details"><a href="products.php?performAction=loadProduct&load={$load }&loadProductID={$myProduct->getProductID()}">{$myProduct->getProductDescription()}</a></td>
<td class="pos_status">
<select name="fw{$myProduct->getProductID()}">
<option value="">{#global_select#}</option>
{assign var="myFullFiles" value=$myProduct->getFullFiles()}
{section name=ff loop=$myFullFiles}
<option onchange="document.location='order.php?ff={$myFullFiles[ff].file_name}' value="{$myFullFiles[ff].file_name}">{$myFullFiles[ff].file_description}</option>
{/section}
</select>
</td>
<td class="pos_prodtype">{$myProduct->getProductTypeAsText()}</td>
<td class="pos_status">-</td>
<td class="pos_qty">{$myProduct->getBasketQty()}</td>
<td class="pos_priceperpiece">{$myProduct->getDisplayPrice()} {#global_price_currency#}</td>
<td class="pos_priceforpos">{$myProduct->getBasketSum()} {#global_price_currency#}</td>
</tr>
{/section}
<tr>
<td colspan="6"> </td>
<td class="basket_sum_o">{#order_subtotal#}</td>
<td class="basket_sum_v">{$orderValue} {#global_price_currency#}</td>
</tr>
<!--
<tr>
<td colspan="5"> </td>
<td style="text-align:right;">{#order_netto_value#}</td>
<td style="text-align:right;">{$orderNetto} {#global_price_currency#}</td>
</tr>
-->
<tr>
<td colspan="6"> </td>
<td class="basket_sum_o">+ {#order_salestax_value#} {#order_salestax#}</td>
<td class="basket_sum_v">{$orderSalesTax} {#global_price_currency#}</td>
</tr>
<tr>
<td colspan="6"></td>
<td class="basket_sum_o">+ {#order_freightcost#}</td>
<td class="basket_sum_v">{$freightValue} {#global_price_currency#}</td>
</tr>
<tr>
<td colspan="6"> </td>
<td class="basket_endsum_o">= {#order_sum#}</td>
<td class="basket_endsum_v">{$orderBrutto} {#global_price_currency#}</td>
</tr>
</table>
<div class="order_buttons">
<a href="order.php?stat=sub" onclick="order.submit()"><img src="images/navigation/ecs_en_button_confirmorder.jpg" border="0" alt="{#tooltip_add_to_basket#}"></a>
</div>
</form>