some time ago the friend Luis showed us the entry in the windows registry that we must change to change the default action of “Resolve” to “Associate” when we do a CheckIn with Visual Studio 2010 .
I then wrote a post about where you also put a .reg to change this entry. Today update this file to modify the registry to Visual Studio 2012.
It has the following content
Windows Registry Editor Version 5.00
“ResolveAsDefaultCheckinAction” = “False”
and can be downloaded from here: http://sdrv.ms/QFopEN
Saludos @ La Finca