I have migrated zabbix to version 2.0. I have "Zabbix aggregate" item with sum of storage on all hosts. It is about 220.98 TB.

The item has "Type of information" - "Numeric (unsigned). Everything ok.

There was a need to edit the item (longer the history) so I edited but couldn't save because of error
"Value type must be Float for aggregate items". So I changed to "Numeric (float)" and saved.

Now the item become "Not supported" because of error: "Type of received value [243017397669888.000000] is not suitable for value type [Numeric (float)]"

What can I do to change type of this item to "Numeric (unsigned)" (because float seems to be to small) to have item working again?