From forum post:

I am reworking my workflow to allow one node to hanle all SVN checkouts and NOT cleanup after itself so next time an incremental checkout (or update) can be done for much faster performance. One thing I noticed is that if a dev team branches the source code causing me to change the SVN url that is being checked out, the svn checkout in QB2 fails stating that the "sandbox is from different URL than what is being requested". This forces me to do a clean workspace to remove the existing sandbox and checkout a fresh one. This makes one more manual step on my part that I could forget to do every time I change the branch of a QB2 configuration. It would be nice if the SVN plugin could detect that the URL being checked out is different from that of the existing sandbox and either:

1. perform an automatic clean workspace
2. use the svn switch command which will change the existing sandbox to the URL being requested