The biblio & the items are separated.
The bug was that the item was still in the biblio (thus being added twice : as "biblio" and as "item")
thanks to dana for pointing the bug.
It loads an iso2709 file into the ACTIVE Database. My 1st tests on sample files shows it works quite fine.
Feel free to try it.
How it works ? enter ./bulkmarcimport in a console, and look.
Note : i'm proud, because it's less than 100 lines long => 99 lines !!!