[Koha] Using build_oai_sets.pl with embed items option

[Pedro Amorim]

Hello all,

I've configured an OAI set mapping with the field 995$a equals "libcode",
where 995$a holds the aquisition library code for the item.

As this is an item field, not a biblio field, I have to run
build_oai_sets.pl with '-i' option in order to embed items to the records.

This is working fine, however, it's only indexing records which only have 1
item of 'libcode'.
Every other biblio with, say, 5 items from different libraries  and 1 from
'libcode' library are not indexing.

I think the C4::Biblio::EmbedItemsInMarcBiblio function might be only
considering the first item in a biblio, instead of checking all of them.

Has anyone else come across this situation?

Thanks,

Pedro Amorim