How do I export or backup boards with attachments and associated extensions?

[Terry Cutler]

After reviewing information on how to export data, including attachments, I still have a question.   How do I ensure the exported attachments retain their file extensions?

I tested the Export feature yesterday and have admin privileges.  I noticed the option to include attachments states "include raw attachments...".  

For our business purposes, a board could include over 60 attachments, often with 3-5 attachments per card.

[Iain Dooley]

@Terry Cutler I'm not familiar with the Trello export feature, where do the raw attachments show up in your export?

[Terry Cutler]

See information on Export at https://help.trello.com/article/747-exporting-data-from-trello-1

The attachments appear in sub-directories of the ZIP'ed export file.   See the following example

If I open the attachments directory, theres's listing of files without file extensions (partial screenshot below).   Some of these are PDFs, some are image files, some are logs\output, and so forth.