We had 2 Checkpoint Firewalls, Say "A Firewall/ Policy A" and "B Firewall/ Policy B", having 600 rules and 700 rules, and we merged them together to feed into a 3rd Firewall, Say "C Firewall/ Policy B", to decommission previous 2 Checkpoint Firewalls.
All 3 firewalls were managed via 3 different management centers in the past. So we had no easy way of merging all Policies together.
The new firewall (Say Firewall C), we have a policy of slightly less than Firewall A policy and Firewall B policy (1250 rules which is less than 600+700 = 1300 ) due to duplicate rules removal.
How can I make sure all unique rules in Policy A and Policy B are in Policy C.
Is there a easy way?