As I was creating a profile, a possible duplicate was shown - which was actually the correct person. I went to accept that profile and must have chosen the wrong button (set as child) because, although everything appeared to be OK and the original profile was intergrated into my family, afterwards I discovered there was now a Rejected Match with the same profile number for both profiles. To make matters worse, I didn't discover this problem until after I'd done another sibling. Same thing: Rejected Merge of two profiles with same ID number.
Can someone please fix this? And what is that "set as child" button supposed to be used for?