I can't seem to find the HowTo for 7.1 Can you provide a link? If it has SQL queries in it, I think it should be easy enough to update it for 7.5.
Remove the process information is easy, but there are a lot of references in other tables that it would be best to get rid of as well. I'm just not sure that I can say for sure exactly how many other references there are, so I'd like to see the 7.1 info first.