I tend to see >/dev/null 2>&1 and not 2>&1 >/dev/null

Then > is probably key here since the next options for gedit is (a) filename(s).

Man page for gedit states for filename(s):

Specifies the file to open when gedit starts - if this is not specified, gedit will load a blank file with an Untitled label. Multiple files can be loaded if they are separated by spaces. gedit also supports handling of remote files. For example, you can pass the location of a webpage to gedit, like "http://www.gnome.org", or load a file from a FTP server, like "ftp://ftp.gnome.org/robots.txt".

If I read this correctly: the 2 is seen as a filename since a space preceeds it. That would suggest you need the > to tell gedit that it is not a filename that comes next.

I myself would create a script and have the commands on separate lines.