The only two life statuses that are not lost when saving the pedigree are "Alive" and "Deceased" (the ones also available on the patient record).
Steps to reproduce:
create a new patient record
navigate to the "Family history and pedigree" section, and click on "Draw pedigree", then select "Create a new family"
select the trio template
add a sibling to the proband
click on the added sibling to open the menu, and in the "Clinical" tab select "Aborted" => the shape of the sibling correctly changes to a crossed off triangle
save and exit
reopen the pedigree editor
Expected result: the sibling is displayed as aborted
Actual result: the sibling shape is diamond, and its life status is "Alive" instead of "Aborted"
Note: The issue is introduced at some point in 1.4 . Version 1.3.10 doesn't appear to be affected.