I'm trying to get the new functionality open-in-place (AP 1.6.7) to work and want to open a JPG directly on my NAS (Synology), edit it and save it back in the original location (i.e. overwrite the existing file on the NAS). So I "open from cloud", select the file on the NAS via the files app (through location either "DS file" or "FileBrowser Biz", i.e. the document provider, which provides access the NAS), edit the picture, and finally choose "Save" from the "burger menu" in the overview/welcome screen, just like the tutorial video showed. It all looks good, except, that the file on the NAS is not updated with the changes and I have no idea, where the "Save" action puts the file. My guess is that it's not saved at all.
Any ideas what is wrong with this approach? Is this functionality (saving back to original location) only working with the iCloud drive location? (I was hoping it was generic, for all locations available in the files app...)
Thank you for any feedback!