That means that either the navlines or the landmass is on the wrong sheet, or your sheet order is wrong. Check the sheets of the entities with the Info menu -> List command, and make sure the sheet for the navlines appear higher up in the sheet list than the sheet for the landmass.

Not sure why they are not included anymore, but you can copy them out from the editing tutorial drawing @Tutorials\UserManual\Trims.FCW

FT3 saves these settings in its program directory, so the only way to change them if you have installed FT3 in the default directory is to run it with administrative privileges. You can do this by right clicking the program icon and choosing run as administrator. This only have to be done when changing these settings.

From that expanded list, you don't need your step 3, the location is set in your step 6. And step 4 can be anywhere inside the drawing window, it doesn't matter where your mouse is when you bring up the popup menu, doesn't have to be on the entity to be copied.

Note that when copying inside the same map, It is usually easier to use :CC2COPY: instead of clipboard copy.

3. shouldn't be where you want to place the entity, the point cc3+ asks for is the ORIGIN of the copy, not the destination. Unless you are doing some precision manipulation, the normal place to click is in the center of the thing to copy. When you past something, it will be placed just as far from the cursor when you click to place, as the point you selected in this step was from the original entity.