* Leave "OLD prefix" blank to add a new prefix to all the tables in the database.
* Leave "NEW prefix" blank to remove a prefix from all the tables.
* In both prefixes include all symbols like "_" or "-" etc. since that will be a substring to search and replace.
* Be carefull about spaces!
* To clone just one table use it's full name in "OLD prefix" field.
* Test before do a real thing!!!