As far as I know the word ukemi is made of two parts: uke - 'recieve/accept' and mi - 'body'.
Perhaps in this context the waza described includes 'recieving' your attacker's body before applying technique, perhaps like sutemi waza (sacrifice techniques) or perhaps even just a form of blending with their body as we do in aikido.
This happens all the time in many japanese arts. I've seen what I would call a shiho nage described as kote gaeshi. Tori/nage/sh'te 'returns' uke's wrist over their shoulder - it's just a different use for the same words.
I'll stop there as I should be working now.