Steps to reproduce:
1 create host
2 create item:
name: test
type: simple check
key: net.tcp.service[ssh]
type of information: Numeric unsigned
3 create trigger:
name: test
Expression: max(/host/net.tcp.service[ssh],#3)=0
4 navigate back to item that is created in 2. change:
type of information: text
5 click on hostname. go for full clone, change name and click add.

Result:

Expected:
host imported successfully.