The issue describes a mismatch between old export format and new import tool.
The issue reports a malformed CSV export from an older version that doesn't align with the new import tool's format. The maintainer indicates this is legacy functionality that may not need support. The task would involve either removing old export functionality or aligning it with new standards.
If I export Items (Probably applies to all other Doctypes. I just tested this on Items) with the CSV format, I get a malformed CSV with a lot of frontmatter. It actually looks like an Excel-ish sort of thing:
"Data Import Template"
"Table:","Item"
""
""
"Notes:"
"Please do not change the template headings."
"First data column must be blank."
"If you are uploading new records, leave the ""name"" (ID) column blank."
"If you are uploading new records, ""Naming Series"" becomes mandatory, if present."
"Only mandatory fields are necessary for new records. You can delete non-mandatory columns if you wish."
"For updating, you can update only selective columns."
"You can only upload upto 5000 records in one go. (may be less in some cases)"
""
"DocType:","Item","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","~","Item Barcode","barcodes","","","~","Item Reorder","reorder_levels","","","","","~","UOM Conversion Detail","uoms","","~","Item Variant Attribute","attributes","","","","","","","~","Item Default","item_defaults","","","","","","","","","","~","Item Supplier","supplier_items","","~","Item Customer Detail","customer_items","","","~","Item Tax","taxes","","","",""
"Column Labels:","ID","Item Code","Item Group","Default Unit of Measure","Item Name","Disabled","Allow Alternative Item","Maintain Stock","Has Variants","Include Item In Manufacturing","Opening Stock","Valuation Rate","Standard Selling Rate","Is Fixed Asset","Auto Create Assets on Purchase","Create Grouped Asset","Asset Category","Asset Naming Series","Over Delivery/Receipt Allowance (%)","Over Billing Allowance (%)","Description","Brand","Shelf Life In Days","End of Life","Default Material Request Type","Valuation Method","Warranty Period (in days)","Weight Per Unit","Weight UOM","Allow Negative Stock","Has B
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