Cisco Firewall :: 5520 Unable To Add Another Line To An Existing NAT ACL

As part of our PCI compliance, we were required to add a line to all of our ACLs in our ASA 5520 running version 8.2(3). Though there is an implicit deny all, we had to add a line to deny from any source to any destination.We had no problems in adding the additional deny all statements except for our NAT access-list. This NAT access list is used for our internet connection.Currently, the NAT ACL has 4 entries to permit from a specified source to destination any. This ACL is then called on our NAT statement.nat (inside) 1 access-list NAT,Also, note that NAT control is in place and we also have NAT zero statements for our VPN connections.So to fulfill our requirements, we just had to add another line to our ACL entries. But we encountered an issue with our NAT acl.