Possible for ITC and Turkish airlines. Not possible for United and accor. This is based on my own experiences and I have done this more than twice for each and learnt it. Others please update if you have tried for other partners
I was able to Convert my Dad'd ER to my United Miles a few months ago.
But it is failing repeatedly, sam with Accor.
ITC still continues to let me transfer to my ID from my father's
Anyone else facing the same issue?