Speicherorte

Replying in English: Unfortunately, "Save a copy" ("Kopie speichern") does not yet allow you to save to iCloud. However, there is a way to do this by first putting the file in iCloud and then using the "Browse more files" ("Weitere Dateien durchsuchen") to find the document from Acrobat. If the file is in Acrobat, you can use use "Share" ("Freigeben") to save in iCloud and then use the "Browse more files" ("Weitere Dateien durchsuchen") to open that file in Acrobat.  If the file is already in iCloud, you can open using "Browse more files" ("Weitere Dateien durchsuchen") directly.

Share to iCloud

In the file list, "..." button next to a file and "Share" / "Freigeben"

Choose "Share a Copy" / "Kopie freigeben"

"Save to Files" and navigate to the iCloud folder.

Open from iCloud

Once you have done that, you can view the file in our File browser. Under the Files Tab, use "Browse more files" ("Weitere Dateien durchsuchen") as shown in @Alexander5E6F 's response and navigate to iCloud (under the Browse) button. 

You can save the files in the Adobe Document Cloud.

Hi, bist Du hier schon weiter gekommen ? Stehe vor dem selben Problem.