All elements are removed from the webform when changing the connector

Problem/Motivation

When adding a production form to our staging environment, we also change the connector in the webform handler to the staging environment. This deletes all elements from the webform, even though the same form processor is present on the staging connector.

The code responsible for this seems to be the FormProcessorWebformHandler::submitConfigurationForm() method:

$builder->addFields($values['additional']['fields']['field'], $fpFields, $connection, $formProcessor, $skipAddingFields);
$builder->deleteFields($values['additional']['fields']['field']);

Proposed resolution

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