I have upgraded SharePoint from 2010 to 2016 using ShareGate and there is an issue with removing list item attachments. I have a list item which has about 10 attachments connected to it. I can press "delete" on them while in edit mode, but after saving the form nothing happens and they're still there. I can add and delete new attachments though. Problem seems to occur only for those attachments which were migrated from the lower version. Is there any way to remove them?
I don't use Designer. No Nintex form, because it's just a Document Library where the attachments are stored. Is there a way to delete only list attachments? Deleting a list is not an option.