Good to see you back Austin
camshaft: The problem is since the BL7000 doesn't see the old turntable as being a datalink connection it won't show "phono" as a possible source.
The system isn't actually that clever - the Beomaster and thus the Beolink don't query the sources, so it's quite possible to select them blindly even if they are "dumb".
Probably you just don't have phono et al programmed in the Beolink. Go to "panel" -> "setup" -> "system" -> "components" -> "audio" or some such path... then you can toggle the visibility of each source (phono will be behind "other"). Store the setting and all the sources you enabled should now be available.