That explains something. But Original BSAs are loaded without esp. Does that mean that either of the options (called by .esp or recorded in Oblivion.ini) is valid?
Yes, they should both work, but the formatting of the ini line can be...
picky... and it's subject to length restrictions, and generally it's much, much easier to just rename your bsa to match an esp that's definitely going to load, like your Bashed patch.
Vac