After migrating the MakeNL SF project to their new project code (allura), noticed that the labels for the SVN repository was "Code-1" and the CVS repository was "Cvs". Tried changing the label for the SVN repository from that "Code-1" to "SVN' but although it didn't give me an error, the label ended up being "Svn" instead. I went back into the project admin and found that the label is listed there in all caps, so it looks to be something to do with the display of the label rather than the label itself.
Reported the issue: http://sourceforge.net/p/forge/site-support/2182/. Was advised in that ticket that it is a known issue that other people have reported and their reference ticket for it is: http://sourceforge.net/p/allura/tickets/3699/.