Is there any way to change the settings of the Google Form so that it again feeds into the same worksheet of the same Google Spreadsheet (A) that it used to feed before I created the copy B?
The only option it gives me is to "create a new worksheet in an existing Spreadsheet". That doesn't work, though; it needs to be the -same- worksheet.
Also, who the heck thinks that it's a good idea to transfer links to a Google Form to the copy of a Spreadsheet?