The "Other" entities can be found in the interface. When using the donut and before you get to the recommended firewall rules, there is a magnifying glass on the line of the "Other" entities, which will list them out for you. You can export those to CSV separately.
1. A "Security Group" can currently be an NSX SG or an AWS SG.
2. Everything application related inside vRNI is a part of its own application constructs. They'll be translated to security groups in the XML export, yes.
3. There is an import tool available, but it's not publically available because GSS does not support it. Contact your local NSBU rep for the tool.
Hope that helps,
Thank you so much for your prompt and detailed response, you've been a big help.
I’m using this tool AutoNSX from Migrate recommended firewall rules from VMware vRNI to NSX | Export firewall rules from vRNI to NSX . What it does it create all rules /export them from vRNI / and create all related objects in NSX v and NSX T . It’s very powerful. Give it a try