Good feedback, on #2 can you describe more what you are seeing? #3, we already have an enhancement logged in the system and #4 is high on our priority release for a future version.
#2 issue is when importing from a file, there is no option for the subnet size. Just an option for the IP address (Network ID).
What I did to make sure I hade the right import documentation. I created a small subnet and then exported it. From there I then filled in any associated information listed inside the export file.
Here are the list of columns that are exported.
IPv4 Address DNS System Name Description Contact System Location Vendor Machine Type Comments Response Time Last Boot Time Last Synchronization Status System Object ID
As you can see there is a column for the Subnet ID but nothing for the mask.
When importing a file your pull down options do not give you a choice for subnet size.
If you try to import a CSV from the tool set Subnet List export. It imports all the ip's but then if you have a network like mine were I have over 900 subnets there is an issue were you have to individually enter each subnet size.
If you want screen shots just let me know.
Is there a possibility to add the "Contact" column in default IPAM summary view?