Bug - XML Setting with empty value, not changeable if used in a special order

[LuBroering]

Environment

• Server OS: Linux
• Browser: Firefox
• Znuny version: 7.0.18

Expected behavior

On changing a Sysconfig value and clicking save, it should be saved and visible in the mask.

Actual behavior

On changing a Sysconfig value and clicking save, it is not visible in the mask.

How to reproduce

Steps to reproduce the behavior:

1. Create a Sysconfig like below
2. Change the TestValue
3. Save
4. It works for all but Test###005

Additional information

example File:

<?xml version="1.0" encoding="utf-8"?>
<otrs_config version="2.0" init="Application">
    <Setting Name="Test###001" Required="0" Valid="1">
        <Description Translatable="1">Test File for XML.</Description>
        <Navigation>Test</Navigation>
        <Value>
            <Hash>
                <Item Key="TestValue" ValueType="String">With Value</Item>
                <Item Key="Template" ValueType="Textarea">&lt;div title="[% Data.Test | html %]"&gt;[%Data.Test | html %]&lt;/div&gt;</Item>
                <Item Key="FieldType" ValueType="Select" SelectedID="Test1">
                    <Item ValueType="Option" Value="Test1" Translatable="1">Test1</Item>
                    <Item ValueType="Option" Value="Test2" Translatable="1">Test2</Item>
                </Item>
            </Hash>
        </Value>
    </Setting>
    <Setting Name="Test###002" Required="0" Valid="1">
        <Description Translatable="1">Test File for XML.</Description>
        <Navigation>Test</Navigation>
        <Value>
            <Hash>
                <Item Key="FieldType" ValueType="Select" SelectedID="Test1">
                    <Item ValueType="Option" Value="Test1" Translatable="1">Test1</Item>
                    <Item ValueType="Option" Value="Test2" Translatable="1">Test2</Item>
                </Item>
                <Item Key="TestValue" ValueType="String">With Value</Item>
                <Item Key="Template" ValueType="Textarea">&lt;div title="[% Data.Test | html %]"&gt;[%Data.Test | html %]&lt;/div&gt;</Item>
            </Hash>
        </Value>
    </Setting>
    <Setting Name="Test###003" Required="0" Valid="1">
        <Description Translatable="1">Test File for XML.</Description>
        <Navigation>Test</Navigation>
        <Value>
            <Hash>
                <Item Key="TestValue" ValueType="String">With Value</Item>
                <Item Key="FieldType" ValueType="Select" SelectedID="Test1">
                    <Item ValueType="Option" Value="Test1" Translatable="1">Test1</Item>
                    <Item ValueType="Option" Value="Test2" Translatable="1">Test2</Item>
                </Item>
                <Item Key="Template" ValueType="Textarea">&lt;div title="[% Data.Test | html %]"&gt;[%Data.Test | html %]&lt;/div&gt;</Item>
            </Hash>
        </Value>
    </Setting>
    <Setting Name="Test###004" Required="0" Valid="1">
        <Description Translatable="1">Test File for XML.</Description>
        <Navigation>Test</Navigation>
        <Value>
            <Hash>
                <Item Key="TestValue" ValueType="String"></Item>
                <Item Key="Template" ValueType="Textarea">&lt;div title="[% Data.Test | html %]"&gt;[%Data.Test | html %]&lt;/div&gt;</Item>
                <Item Key="FieldType" ValueType="Select" SelectedID="Test1">
                    <Item ValueType="Option" Value="Test1" Translatable="1">Test1</Item>
                    <Item ValueType="Option" Value="Test2" Translatable="1">Test2</Item>
                </Item>
            </Hash>
        </Value>
    </Setting>
    <Setting Name="Test###005" Required="0" Valid="1">
        <Description Translatable="1">Test File for XML.</Description>
        <Navigation>Test</Navigation>
        <Value>
            <Hash>
                <Item Key="FieldType" ValueType="Select" SelectedID="Test1">
                    <Item ValueType="Option" Value="Test1" Translatable="1">Test1</Item>
                    <Item ValueType="Option" Value="Test2" Translatable="1">Test2</Item>
                </Item>
                <Item Key="TestValue" ValueType="String"></Item>
                <Item Key="Template" ValueType="Textarea">&lt;div title="[% Data.Test | html %]"&gt;[%Data.Test | html %]&lt;/div&gt;</Item>
            </Hash>
        </Value>
    </Setting>
    <Setting Name="Test###006" Required="0" Valid="1">
        <Description Translatable="1">Test File for XML.</Description>
        <Navigation>Test</Navigation>
        <Value>
            <Hash>
                <Item Key="TestValue" ValueType="String"></Item>
                <Item Key="FieldType" ValueType="Select" SelectedID="Test1">
                    <Item ValueType="Option" Value="Test1" Translatable="1">Test1</Item>
                    <Item ValueType="Option" Value="Test2" Translatable="1">Test2</Item>
                </Item>
                <Item Key="Template" ValueType="Textarea">&lt;div title="[% Data.Test | html %]"&gt;[%Data.Test | html %]&lt;/div&gt;</Item>
            </Hash>
        </Value>
    </Setting>
</otrs_config>

Screenshots