I have almost the same issue than MariaNiku but not exactly. When I import a CSV file in the plugin CSV Import +, the import is said “completed”, but it always skips all of my records, except one, the last one. I imagine that this is a trouble with my documents, but I can’t figure it out ? Does anyone has a solution ?
Do you use the standard Csv Import ? It doesn’t allow tabulation, so replace them with a unfrequent character, like “|” and set it as the “column delimiter”.
Furthermore, what is the column you use for identifier? Archive Folder and Csv Import + work the same (except that Archive Folder uses directly a spreadsheet): they need an identifier on each row. And I fixed the max size of an identifier to 255 characters, so it can’t be the title here.
A detail: to be Dublin Core compliant, the identifier and the source should be not an html value, because it may be used widely and easy to share. You can convert the sudoc code into a link with a filter in a specific plugin.