My application using nuBuilder is now live so to avoid disruption/ errors & to be able to test as a user several cases, I duplicated the code & base to have a sandbox.
I cloned the database with phpmyadmin, copied the php code to a subdirectory "sandbox", changed the database in the nuconfig.php to point to the sandbox one.
Everything seems to work fine so far ... however I'm a bit puzzled by a cross access to the standard database from the sandbox one :
* I created an edit form in the sandbox, I see it in the forms list.
* I created a button in the user's home (sandbox) and tried to run the previous edit form as popup
* My edit form don't appear there
* I changed a description from the main application (non-sandbox) and ... I see it on the sandbox run Form selector

How is that possible ? Is there a magic trick that I missed ? or it isn't possible to have 2 instances and I need to start it on my local computer ?
Regards,
François