I don't own a copy of this module... but my PDF of Swete's LXX indicates that this reference is actually taken from the appendix. In Swete's text of Genesis, the main apparatus moves from 48:1 to 48:3, and this reference is included in the appendix at the end of the volume.
Swete 2.jpg 550.87KB
So, it looks like the creators of the module incorporated the references from the appendix into the main apparatus, and added the notation "[appendix]" to indicate their origin.
Edited by Matthew Burgess, 10 February 2014 - 07:33 PM.