Prevent Automatic Creation Of Short Description From Full Description

If there is no short description specified I don't want CS-Cart to build one anyway using part of the full description. What should I change to prevent this?

templates / addons / my_changes / overrides / blocks / product_templates / default_template.tpl

{$product.short_description|unescape}

{* MODIFIED replaced else with elseif null *}
{elseif null}
{$product.full_description|unescape|strip_tags|truncate:200:"..."}{if $product.full_description|strlen > 200}{$lang.more_link}
{/if}
{/if}

design/themes/YOUR_THEME/templates/common/product_data.tpl

replace

        {if $product.short_description}
            
{$product.short_description nofilter}
{else}
{$product.full_description|strip_tags|truncate:160 nofilter}
{/if}

with

        {if $product.short_description}
            
{$product.short_description nofilter}
{/if}