It has probably happened to all of us. This morning it happened to me. I goofed.
I was adding a new family into Legacy and then noticed that I added a child to the wrong parents. Instead of adding Esther Whitney as a child to her parents, I added her as a child to her brother. Do you notice anything strange about the birth years of Esther and her brother Elisha in the image below? Esther was born in 1799, and her father/brother was born in 1797. Legacy's Potential Problems report would have spotted this error later on, but I'm glad I caught it now.
Fortunately, problems like this are easy to resolve. It's just a matter of "unlinking" the child from the wrong parents and then "linking" the child to the correct parents. No "deleting" involved. Here's how.
1) In Legacy's Family View, right-click on the child and select From Parents. Click Yes.
2) Now, navigate to the correct parents (might have to switch to the Index View to select them) in the Family View. Click on Add > Daughter/son. The Add screen appears. Here, instead of clicking on the usual "Add a NEW person" button, click on "Link to an EXISTING person".
3) Select the child from the list and click Select.
All should be well now. Esther is now correctly linked to her parents as a daughter. So if you ever notice any odd relationships like this, you do not need to delete anyone and start over. Just use link and unlink. And don't drink while you're linking.... :)