Hi Wolfranz,
Thanks for posting in Apple Support Communities.
If your document is in iCloud and your document is not saved on your computer, you can download it from iCloud.com and upload to your desired location. To download the file to your computer:
"On your Mac or PC
- On iCloud.com, click Photos and select a photo or video. Hold the command key on your Mac or control key on your PC to select multiple photos or videos.
- Click and hold the download button
in the upper corner of the window. If you want to download your photo or video as it was originally captured or imported, choose Unmodified Original. For JPEG or H.264 format — including edits, and even if it was originally in HEIF or HEVC format — choose Most Compatible.* - Click Download.
If your photos download as a ZIP archive, learn how to uncompress the folder on your Mac or your PC. "
This data is found in Download iCloud photos and videos.
You can also archive iCloud data as mentioned in Archive or make copies of the information you store in iCloud.
Regards.