Interlis-Import and Export: Missing classes

[tomep]

Describe the bug
A clear and concise description of what the bug is.

[Wastewater structure_symbol], [wastewater structure_text], [maintenance event_wastewater structure_assoc] and [reach_text] are not imported.
I have carried out an import and export test of my productive data and created a table of the quantity structure. It is clear that the previously mentioned classes are not imported.

There seems to be a bug in the class [MaintenanceEvent_WastewaterConstructionAssoc] in particular. As a result, no maintenance events are visible in Teksi.

The flush nozzle class is also not exported.

To Reproduce
Exact steps to reproduce the behavior:

1. Import Data
2. These classes are missing in the Object Selection task
   

Expected behavior
A clear and concise description of what you expected to happen.

The data import should include all original tables

Screenshots / data
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Desktop (please complete the following information):

• TWW version
• QGIS Version
• OS

Additional context
Add any other context about the problem here.

[tomep]

[MaintenanceEvent_WastewaterConstructionAssoc]:
Interlis format comparison sample data set DSS vs. my Data.
DSS:
<DSS_2020_1_LV95.Siedlungsentwaesserung.Erhaltungsereignis_AbwasserbauwerkAssoc><AbwasserbauwerkRef REF="ch080qwzSW000142"/><Erhaltungsereignis_AbwasserbauwerkAssocRef REF="ch080qwzEH001005"/></DSS_2020_1_LV95.Siedlungsentwaesserung.Erhaltungsereignis_AbwasserbauwerkAssoc>
My Data:
<DSS_2020_1_LV95.Siedlungsentwaesserung.Erhaltungsereignis_AbwasserbauwerkAssoc><AbwasserbauwerkRef REF="ch14734hBW100068"></AbwasserbauwerkRef><Erhaltungsereignis_AbwasserbauwerkAssocRef REF="ch14734hEU180005"></Erhaltungsereignis_AbwasserbauwerkAssocRef></DSS_2020_1_LV95.Siedlungsentwaesserung.Erhaltungsereignis_AbwasserbauwerkAssoc>

The data is available in the intermediate table (schema "pg2ili_abwasser").

[cymed]

Status of implementation:

Import:

• Abwasserbauwerk_Symbol: Import/export wastewater structure symbols #355
• Abwasserbauwerk_Text: no import
• Erhaltungsereignis_AbwasserbauwerkAssoc: 2024 08 05 import export re maintenance event #357
• Haltung_Text: no import

Export:

• Abwasserbauwerk_Symbol: Import/export wastewater structure symbols #355
• Abwasserbauwerk_Text: Export via QGIS Project
• Erhaltungsereignis_AbwasserbauwerkAssoc: 2024 08 05 import export re maintenance event #357 WIP
• Haltung_Text: Export via QGIS Project
• Spuelstutzen: 2024 08 05 fix export flushing nozzle #356

[sjib]

Should be all solved - please re-open if needed.