Sorry not familiar with wordpress but you could construct a mysql query to take specific data from one table to populate another. An simple example found on tinternet. INSERT INTO database2.table1 (field1,field3,field9) SELECT table2.field3,table2.field1,table2.field4 FROM table2; If you add a where clause you can then be specific on match rules.. eg FROM table2 WHERE table2.field1 like '%for sale%'; Andy
can you help us with data example and table structures? that will give us fair idea of what you wish to achieve.
This will probably be the best solution, but you may also have to manually rebuild relational data tied to the posts. Wordpress in my experience also keeps an index of posts and what categories they are tied to so ultimately you will have a few steps in addition to this.