The redirector script doesn't do that. It doesn't know what the old ID was, to equate it to the new ID. I had to go into my live system database and change every ID by hand, to get at least the main links working. Every old URL in our system, in newsletters and articles and such - are all now invalid. The links to the "low carb forum" at ID xxx now point to the Entertainment News forum, because the ID has changed.
I agree the software is changed. But I don't see the need to randomly change the IDs of forum rows in the database, since they had IDs in the old system and IDs in the new system.
