With JabRef it is possible to specify the sort order used when saving and exporting a bib file. When exporting the bib file, you can specify to use the current sorting of the entries shown in the GUI. When setting the library properties, there is no corresponding option in the save sort order section. I want to sort the bib file so that entries are grouped with a primary sort criterion of entrytype, but this is not in the drop down list. Is it possible to save a bib file sorted based on entrytype directly from JabRef?
Why bother about? Like in any database, when each entry have enough information, the order in which each entry is stored is completely irrelevant. However, if you insist, for example, to order by the keys in inverse order:
Save sort order
🔘 Save entries ordered as specified
Primary sort criterion
bibtextekey▼ ☑ Descending