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I work for a school system in Virginia. We have been using DNN for our website for several years (v 4.09). All of our schools' sites are children of our main portal.
We recently installed a new instance of DNN (v 6.02.05) and created a new district site there.
We changed the URL for the new site to replace the old site, created redirects to the schools' sites, and fixed the aliases so people would reach the new site when typing in the URL.
Unfortunately this broke all of the menu links in the schools' sites and we had to revert back while we figure it all out.
I can, and will, provide more info if it's needed, but any help or guidance will be appreciated. I'm a teacher in the county and not too knowledgable about the ins and outs of servers, etc. but I have very smart people to work with and they'll help with the technical!