Template OS Linux is always used in "Template $template_name with item key $item already linked to host." error message despite another template is actually being modified.

To reproduce:

1. Make Full Clone of stock Template SNMP Disks and name it 'SNMP Disks new'
2. Not go to edit template Template SNMP OS Windows and link 'SNMP Disks new' , press update
3. error would appear referencing Template OS Linux (dunno because it has id of 10001?)