Check for proper layer assignment using the right click properties function, re-label the selected items in the properties box to the desired layer. Easiest if all other parts are in their own layer and can be hidden as layers.
Also hide all other layers to check the one which is not all in the right place.
Use the select "from left" function to grab all pieces, whether in components or not.
So drawing in different layers makes it easier to hide irrelevant parts, thus easier to select, re-layer and also to move components into correct position without distraction.