The last answer here is exactly what I'm looking for, but I want to do it the clean way:
How to sort associated products in a grouped product
Has anybody a solution to achieve this within the
grouped.phtml I rather don't want to open up an own module just for this sorting.
$_associatedProducts = $this->getAssociatedProducts($_product)->addAttributeToSort('entity_id', 'ASC');but that doesn't work.