Attachment table issues when copying a topic

When I copy a topic,

Normally, I can delete attachments (it wont allow it this time, as it states : "attachment does not exist" but it visibly does.

1 Is it possible to delete the attachments?
2 Is it possible to do a 'bulk delete' on multiple attachments?
3 Is it possible to not include the attachments when copying a topic?

Please advise.

Found this question (unanswered) that is similar to my question:

Question824

-- TracyMaloney - 06 Sep 2023

Hi Tracy,

bulk deleting attachments is available via Extensions.TopicInteractionPlugin

More fine-grained control of which parts to copy is available using Extensions.CopyContrib

Note that there was a bug fixed in Foswiki-2.1.8 with regards to the way attachment names have been sanitized. There is a regular expression in LocalSite.cfg or via bin/configure that changed during recent patch releases, called $Foswiki::cfg{AttachmentNameFilter} and $Foswiki::cfg{AttachmentNameFilter}. Please make sure that these are set to the standard values (by clicking on "reset" in bin/configure). Could be that the attachment causing problems has been uploaded with an earlier version of Foswiki and thus wasn't sanitized correctly.

-- MichaelDaum - 07 Sep 2023