fixes #11885 - exclude lookup_value_matcher on clone
Keeping lookup_value_matcher populated during a host or hostgroup#clone caused Rails to believe the cloned object was still associated to the existing LookupValue associated to the original object, and it would destroy it during clone.
Related issues
Bug #11885: Viewing host group clone form deletes smart class parameter overrides
Added by Dominic Cleal over 8 years ago
fixes #11885 - exclude lookup_value_matcher on clone
Keeping lookup_value_matcher populated during a host or
hostgroup#clone caused Rails to believe the cloned object was still
associated to the existing LookupValue associated to the original
object, and it would destroy it during clone.