Is a quit claim deed to oneself valid as a means to sever a joint tenancy in Iowa
I was a joint tenant with full right of survivorship on a property in Iowa. The other joint tenant filed a quit claim deed to herself in an effort to sever the joint tenancy. She died shortly after. I filed an affidavit of surving joint tenant and her name was removed from the title. Her estate opened and they claim an interest in the property. Was the joint tenancy severed when the deceased joint tenant filed a quit claim deed to herself before she died?