Open File with same name but little different path

[woho]

Task:
opening a file with the same name like the current open but little different path
i.e.:
Currently open file:
\\OurServer\projects\MyProject2\Customer3\ECU2\v2100\src
File to be opened
\\OurServer\projects\MyProject5\Customer3\ECU2\v2100\src

What I do now:
- Context Menu/Properties => Filename => Ctrl-C for copy
or menu Edit/Copy Other/Filename
- Ctrl-Shift-O ("File Quick Open") => empty edit field
- Insert => Filename with path of the old file
- change '2' to '5' => filename with path of the new file
- OK => new file is opened

How it could be much shorter:
if the 'File Quick Open' dialog was not empty but showed the full name (path + name + extension) of the current file. This string in the dialog box should be selected (marked) by default => entering text will delete the 'old' path if I need a complete different file => clicking into the string (or navigating with cursor left/right keys) where I want to change just a view letters in the path will keep the text !!

Or is there any other simple way already available

By the way I like the File Quick Open dialog a lot, especially for using with wildcards. Thanks for that feature

Wolfgang