I opened a pdf file from our ftp server thru firefox to which I made changes (using Acrobat 9 Pro). Is it possible to save those changes back without saving it locally then ftp it back? (Using windows 10)
When you open a file from an FTP site you're actually downloading it locally and then opening it. When you're done you need to upload it back to the site. Some FTP clients can do that for you automatically (like FileZilla), but I doubt Firefox will.