Please see FamilySearch Transfer ⟶ Match Persons
Harry Sitch is matched to FamilySearch person KLYX-BVP
Beatrice Nemecek is matched to FamilySearch person KLYX-B7Z
From ⟶ World ⟶ FamilySearch ⟶ FamilySearch Tables locate Harry Sitch
will download the Family for Harry Sitch from FamilySearch
After the download using Augean will know of all FamilySearch couples connected to Harry Sitch
The FamilySearch couple MZXS-WS4 has persons KLYX-BVP (Harry) and KLYX-B7Z (Beatrice)
So there exists a FamilySearch couple with the same parents as the GEDCOM family F4
Augean will automatically map the GEDCOM Family F4 (consisting of Harry and Beatrice) to MZXS-WS4
This mapping is done automatically.
The GEDCOM family is automatically mapped to the FamilySearch couple.
Transfer facts between GEDCOM and FamilySearch using Media can also be transferred for couples.
For Individuals the Match between GEDCOM and FamilySearch is determined by the _FSID tag added to the GEDCOM person
For Families, Augean computes the match, by matching a GEDCOM Family with a FamilySearch couple with the same parents.