Help !!!! Cisco firewall rules need to migration into the NSX DFW

Hello Guys,

Help !!!

I have two location each site have one Cisco ASA Firewall with 1800 Rules per firewall.  Now these two location are moving to one Data Center behind the Virtual environment.

Now what would the best process do it.  like get the active rules from firewall after clear up hit count from ACL.

After that I need to know what would be the best way to migrate those cisco asa firewall rules into the NXS DFW.?

Thanks in advance

Sunil kumar Baghel