Combine Data from different workbooks

Thanks roy, here are the two workbooks I use. Both books have a journal on page 4, what is the best way too combine the data in the journals. The books are a mess now,been working on them, I will clean up. The invoice number works for both books, I just need a source too combine all data in journal. The journal helps be keep track of payment. With the setup I have is this possible too do? Maybe the journals could merge somehow?