EDIT: Recreating a new compute profile does not fix the issue--it still shows NIC type of E1000 and the top most network name.

Looks like LUN is the same thing--it defaults to the top most LUN and subsequent changes aren't saved.

In the production log, it looks like it's not even taking the parameters specified in the web interface from the POST:

Started PUT "/compute_profiles/5-web-server/compute_attributes/2" for 10.30.39.50 at 2014-05-12 09:25:08 -0500
Processing by ComputeAttributesController#update as */*
Parameters: {"utf8"=>"✓", "authenticity_token"=>"xxx/k=", "compute_attribute"=>{"vm_attrs"=>{"cpus"=>"1", "corespersocket"=>"2", "memory_mb"=>"1024", "cluster"=>"LAN", "path"=>"/Web Developers", "guest_id"=>"centos64Guest", "interfaces_attributes"=>{"new_interfaces"=>{"type"=>"VirtualE1000", "network"=>"dvportgroup-526", "_delete"=>""}, "0"=>{"type"=>"VirtualVmxnet3", "network"=>"dvportgroup-530", "_delete"=>""}}, "volumes_attributes"=>{"new_volumes"=>{"datastore"=>"wrongdatastore", "name"=>"Hard disk", "size_gb"=>"10", "thin"=>"true", "_delete"=>""}, "0"=>{"datastore"=>"rightdatastore", "name"=>"Hard disk", "size_gb"=>"10", "thin"=>"true", "_delete"=>""}}, "scsi_controller_type"=>"VirtualLsiLogicController"}}, "compute_profile_id"=>"5-web-server", "id"=>"2"}
Successfully decrypted field for Foreman::Model::Vmware VMware
Redirected to https://ddpuppet/compute_profiles/5-web-server
Completed 302 Found in 292ms (ActiveRecord: 3.8ms)