Bug Report: Lexware Office "Update a Contact" module doesn't allow optional emails

Questions
1

:bullseye: What is your goal?

I want to use the Lexware Office “Update a Contact” module to update my data in Lexware, if it has been updated in HubSpot before.

:thinking: What is the problem & what have you tried?

I inserted the variable {{1.properties.invoicing_email}} from my HubSpot “Watch CRM Objects” module at the beginning of the scenario
into the field Email Addresses > Business Email of my Lexware Office “Update a Contact” module.

Now this work great if the field Invoicing Email in HubSpot is filled. But this is not always the case. Some customers don’t have separate invoicing emails and then this is empty.

And if this property really IS empty, then the “Update a Contact” module still sends out this part in the payload:
“emailAddresses”: {
“business”: null
}

However, the Lexware API doesn’t allow “business”: null. So what the module SHOULD be doing is: if the property is empty, it should simply send:
“emailAddresses”: {
}

Then everything would work fine. But as it is right now, I cannot use the module to update email addresses.