firewall migration project

[ring zer0]

I am working on a big firewall migration project where each firewall has atleast 10K lines of ACLs, I need to export them into an excel spreadsheet and then get rid of the redundant ones. Then would need to configure them on the new firewall.

Since this manual task is tedious I want to know from industry experts here if there any automation tool by cisco or any other third party vendor which will at least export the raw config (ACL,NAT,Routes etc) into a presentable spreadsheet format. 

[Rahul Govindan]

The ASDM has an export to CSV functionality for ACL's and NAT (pic attached). For routes, you can do a "show run route" from the CLI and import the output to CSV. This should be simple as each line should have a single route.