I have a page that has over 101 files (of different types; pdf, xlsx, png, msg) attached to it.
The site was successfully migrated to the cloud on August 18, 2023.
The page was converted to the new editor on September 14, 2023.
Since then, the error 'We couldn't load the file.' has persisted for all files:

It seems like the links were converted broken broken.
Preview before conversion / error (example of one file preview):

However, all file attachments are apparently intact on the side. The download would be possible.
Newly uploaded files are also regularly displayed in the preview.
However, it would not be a practical workaround to download and upload all over 100 files.
Unfortunately, there doesn't even seem to be a media macro anymore in the new editor to access the already attached file and recreate the preview, see community-question 'How can I reuse already attached images in the editor without having to upload them again?'
Is there already a solution or a repair procedure for this?