Hi,
I just tried on my end and the input text fields are well displayed in order edition.
Do you have edited the view "order / edit_additional" view in the backend template ?
In that view there is the code:
if(!empty($this->fields['order'])) {
$editCustomFields = false;
if(isset($this->edit) && $this->edit === true) {
$editCustomFields = true;
}
foreach($this->fields['order'] as $fieldName => $oneExtraField) {
?>
<dt class="hikashop_order_additional_customfield hikashop_order_additional_customfield_<?php echo $fieldName; ?>"><?php echo $this->fieldsClass->getFieldName($oneExtraField);?></dt>
<dd class="hikashop_order_additional_customfield hikashop_order_additional_customfield_<?php echo $fieldName; ?>"><span><?php
if($editCustomFields) {
echo $this->fieldsClass->display($oneExtraField, @$this->order->$fieldName, 'data[orderfields]['.$fieldName.']');
} else {
echo $this->fieldsClass->show($oneExtraField, @$this->order->$fieldName);
}
?></span></dd>
<?php
}
}
As you can see it list all the custom order fields, so please check via phpMyAdmin in the table order if the columns with the custom field name are well created.