ATC alterations missing in OMOP

Sounds good. Please feel free to reach out if you need any help with incorporating your source vocabulary into OMOP. Especially if you want it to be incorporated as a vocabulary with OMOP concept_ids and so. Vocabulary team has an established process for this.
Re old ATCs: they are not in the mappings we created. So if you need both the concept_ids for ATC to be placed in drug_source_concept_id AND mappings to OMOP you should state so.