In Magento, you have the option to do a partial refund, meaning only refund some of the products / qty from the original order. This option seems to be missing in my store. Normally it is possible when creating a Credit Memo to define the ‘Qty to Refund’ for each product on the order/invoice. But I’m missing the option/column of "Qty to Refund”

I did some research and it looks like my extension "TinyBrick/Authorizenetcim” is responsible for this. Its the only enabled Payment method.

I tried adding the code below to the TinyBrick/Authorizenetcim classes but that didn’t fix the issue

protected $\_canCapturePartial = true;

Does anyone know how to fix this? Every help is much appreciated. Thank you

Best information I’ve found for this:

<http://www.magentocommerce.com/boards/9401/viewthread/14698/P15/>

<http://www.magentocommerce.com/wiki/welcome_to_the_magento_user_s_guide/chapter_8#credit_memo_options>