IMPORT/EXPORT CSV

1. IMPORT/EXPORT CSV
When a CPT has no physical location (general >select CPT to disable physical location) obviously the listings have no address. I can export but when I cannot import because the listings have no address.

2. IMPORT/EXPORT CSV
The same if the CPT has physical location but the address is not mandatory field. IMPORTING CSV without address/longitude/latitude can be useful to present listings to be claimed or when the listing is an exception and has no address (usualy brands have address but if a brand doesn’t have? This already works in listings if the field address is not mandatory but in importing it doesn’t work). So, is it possible when a field is not mandatory to import CSV with this field empty?

3. IMPORT/EXPORT CSV
Is it possible to import/export with special characters (é, ã…)?