They have been private trees from the git go and I checked today and yesterday on Ancestry and they are fully private. Try searching for Thomas Rehrey, a rare name in my tree. You will find him and son on my 2 public trees on Ancestry and one private for me (there are some other family trees that have him too). Now search for him on Mundia. You will see several trees, including my private one. I set up a dummy account on Mundia with another email just so I could look in to Mundia's response to my trees. Bear in mind I also hit the button on Mundia to make my trees hidden.I have been in touch with both Ancestry and the no reply Mundia. Just changed the names on my trees to see if I can break the links to Mundia. Takes a couple days for Ancestry to batch changes to trees. I have been an Ancestry member since 2000 and a computer user since 1985. I know what I am seeing on Mundia, and it is not pretty.