hi all
The partnership will break in any case if the cats didnt have a baby within 11 days.
The behaviour is described at this page:
http://kittycats.biz/help/article.php?id=23
"Once you paired your cats they will stay partners until they have a kitten or for 11 days. If you selected the option to have the partnership extended it will not break after they had a kitten."
The reason why we made them unpartner after 11 days without a baby (even if set to auto unpartner) was to provide a way to unpartner the cats for free in any case.
However, this indeed means a problem if you partner your cats right after unpacking them, as they will not have gained 100% love by that time.
Regards
KittyCatS