Translated Titles from 242 missing language code from $y

[kirkhess]

The MARC 242 field has two mandatory subfields: $a and $y
See https://www.oclc.org/bibformats/en/2xx/242.html

The marc2bibframe2 specifications have 'ignore" on subfield $y so titles with the variant type 'translated' do not have a language code.

This is also a problem in bibframe2marc, which doesn't have a spec for 242$y.