file_is_ioc and file_is_evidence in add_ds_file not working properly

If I create a case A with any of those flags active, with attachment A, they work by adding the file to the evidences and IOCs.

But if I create a case B, with attachment A, with any of those flags active, the attachment is not added either to the IOCs or the evidences.

If I delete the case A and try to create the case B again, the flags work again.