I have not had a chance to test.
The file should be downloaded to the Document Path. The FIAS is based on FMGo.
See Get(DocumentsPathListing) FileMaker Pro 15 Help will give you a list of all files in the Documents Path.
Yes, they should be downloaded to the Document Path. But they aren't.
Neither the file I downloaded from iCloud nor the one I downloaded from Dropbox are there.
I have done the same with FMGo and there it is working.
Yes, I use it all the time in FMGo, I just have not had a chance to test in FIAS. I was hoping it was something simple.