I'm looking for a solution where I can compare my current firewall configuration against a previously saved configuration. This would be to identify all changes so that list can be compared against a master list of changes.
create firewall config reports using the WebUI (System -> Configuration File -> Firewall Configuration Report).
Use a print to PDF utility (such as doPDF or MS Print to PDF) to get it in a readable file.
Then use a PDF compare utility to compare those reports to identify changes.
Here is one:https://www.diffchecker.com/pdf-diff