All you need is for them to be installed, check the options in NHSEO and then save the settings.
There should be no reason for the links to not be passed from NHSEO to NHI, have you tried restarting them after setting them up and then checking that the option to use NHI in NHSEO is still selected?
Sometimes the list is not imported in NHI until you actually click the start button in NHI.