Hi,
If you search the forum, you will see that there are (were) several BM sources; The said to be "sick one" is the one from UCD-DAVIS when they still offered scions.
There were other figtrees coming from the Madeira Island called BM.
If memory serves me well, Encanto farm has a BM (a bit) different from the UCD-DAVIS-BM.
As long as the fruit is good and fitting into your expectations ... Grow yours and see what she does !