I don't know if this is the right please for this question but i don't know where else i should ask for a solution for it.

This is the situation:  we have a working dnn prd site.  We made a clone of it and renamed the clone to tst.  This worked great for a couple of months.  Now i wanted to put on the localization and test it on our tst site.  When i putted the localization on on the tst site everything went wrong.  All bindings were messed up and the tst site redirects to our prd site.   This is not good.

When i looked up this problem i found several solution and i also tried them.
I found the table PortalAlias in the database and found some entries that didn't belong there so i deleted them.  In the table PortalSettings i found an entry DefaultPortalAlias what was wrong also and changed it.  Then i recycled our application pool, resetten IIS, restarted the server.  Nothing changed.  The site still redirects to our prd site.

So for testing purpose i changed the connection string to an instance of the database before the localization but it still redirects to our prd site.

I wanna know what causes this redirecting and how can i solve this?