Redactions across files

Hey.  In my job I'm often tasked with redacting large documents.  When redacting these, it's often easier to split them into seperate smaller documents.  For example, if I have a 500 page document I'll split it between 180 pages and work on each document seperately.

The same names, contact numbers etc. often pop up across all documents, so any information highlighted for redaction in "Part 1" of the split file (not yet applied) will need to also be redacted in Part 2 and Part 3.  Is there a way to copy over the highlighted for redaction bits from Part 1 to Part 2 and Part 3?  At the moment if I redact "John Smith" in Part 1, I then have to manually input to redact "John Smith" in Part 2 and Part 3.  

Thanks!