Export attachments from ir.attachment to another version - Odoo 15

Question

Hello everybody, I'm migrating my Odoo 10 to Odoo 15 and I'd like to export my attachments from ir.attachment in .csv/excel to my Odoo 15, but I only can export like 2 attachments or I get the following error:
"UncaughtClientError > SyntaxError Error de Javascript desconocido > Unexpected token
And I can't export in excel format for the character limit.
Anyone could give me an advice for the best method for export/import the attachments?

Thank you so much!

Jorge Blasco · Answer

I get the same error, it's strange, now I'm trying to copy my Odoo10 filestore folder to my Odoo15 server and then import the ir_attachment records without the binary data, the import works fine but the data field is empty, I don't know how to fix it

Cybrosys Techno Solutions Pvt.Ltd · Answer

Hi,
Try to export these fields shown in the picture below,

In v15 you can directly
import the attachments, Also consider that the extension is not in
.css/.js/xml that record may get some importing issues, all other
extension records can import in the normal method.
Also, try to import less than 50mb data others may get loading issues based on the data size
Hope it helps

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