I've got a library with 4000+ books. There are 2 (useless) custom columns which have generate metadata inside epub and opf files:
I tried to delete the columns from Calibre library, but metadatas remain - the same happens if I export books.
Is it possible to bulk remove them?
:thanks:
Code:
<meta name="calibre:user_metadata:#formats" content="{"column": "value", "datatype": "composite", "rec_index": 22, "search_terms": ["#formats"], "colnum": 1, "kind": "field", "is_multiple2": {}, "category_sort": "value", "is_csp": false, "is_editable": true, "table": "custom_column_1", "#extra#": null, "display": {"composite_template": "{:'approximate_formats()'}", "make_category": true, "use_decorations": 2, "contains_html": true, "composite_sort": "text", "description": ""}, "link_column": "value", "label": "formats", "is_category": false, "is_multiple": null, "is_custom": true, "name": "Formati", "#value#": "EPUB"}"/>Is it possible to bulk remove them?
:thanks: