try to import a screen that contains "triggers info" element which is not filtered by group. this fails with error message "Host group" (probably because resourceid is 0)

two more things :

1. error message is "Host group" - should be a bit more specific
2. when importing host or template info and item key is not allowed (let's say because of usage of spaces in it), some additional information should be printed (for example, host/template name, item name & key)