Relationships not displaying

I’m sure this has been covered before, but I’m stumped. I’m not new to RM but just got RM8. I worked with two databases and appeared to have merged them ok. After a bit of clean up all generations looked as they should. Then I merged duplicates and the relationships separated after my GPs generation. Each person shows, however, the correct relationships. For the life of me I can’t figure out how to restore them. What am I doing wrong?

People Page > Edit (Pencil Icon) > Set relationships > Show relationships to > Select yourself as the person with regard to whom relationships will be shown and press “Select” > Set relationship.

This can be used to show relationships to anyone currently in your database but needs to be repeated if relevant new people are added later,

Thanks. But nothing changed. Only lines I added myself show in the tree after my GPs.