sharepoint 2007 loses permissions
I have just been asked to create a sharepoint site for the school, i have completed and now have it up and working. the only problem is, is that a lot of the sites have lost there permissions and have given everyone including 'homeowners' 'no access' i believe this could of happened when i was copying the site as we have 1031 sites and 989 of them are pretty much the same just for different departments. so i need to know how to get it to copy the permissions when i am copying the site otherwise i will have to do all of those 989 sites again one at a time. PLEASE HELP!