Hello,
I've find that sometimes when Zabbix network map is exported, YAML file of exported map is corrupted. Problem is mainly related to "elementtype = '2'", so to triggers on network maps - Sometimes when map is exported, tag which includes "elementtype = '2'" is broken:
This is "good" export:

selements: 
 - elementtype: '2'
          elements:
            - description: 'lorem ipsum'
              expression: 'last(/lorem ipsum/lorem ipsum[lorem ipsum])=1'
              recovery_expression: ''

But, sometimes exported file looks like that:

 selements:
        -
          elementtype: '2'
          label: |
            lorem ipsum
           lorem ipsum: {?last(/lorem ipsum/lorem ipsum[lorem ipsum])}
            lorem ipsum: {?last(/lorem ipsum/lorem ipsum[lorem ipsum])}
          label_location: '-1'

As you can see, under tag elementtype: '2' we have missing whole section elements, missing are: "description", "expression" and "recovery_expression"
 
Steps to reproduce:

TBA, currently unknown
**

Result:
See above
**

Expected:
Export of .yaml maps working correctly