merging + puppy permission?

so I guess it wont be very secret anymore since it's obvious whom i am asking this about
.. ;_;
but if I got permission from a pack pm for puppy but then they merge with another pack, do I need to re-seek approval from both? orrr
also idk if it's worth mentioning but the permission was not to have puppies within the pack, it was just to get pregnant; the puppies would be born elsewhere.