Move file from one editor window to another (split mode)

• Goto File->Settings
• Then Keymap
• Type in the searchbox “Move To Opposite Group”
• Assign a shortcut

Also useful is “Goto Next Splitter” which allows you to switch between your Splitter.

But you’ll hardly find a shortcut which is not already occupied.

I used Ctrl + NumPad+ for “Move To Opposite Group” and Ctrl + ArrowRight for “Goto Next Splitter”

You’ll be notified that this shortcut is already in use, but you can ignore that. I had no conflicts so far