Contact Form 7 Sending only "Is Value" data

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I have the following form:

Ditt namn
    [text* your-name] 

Telefon
    [text* your-phone] 

E-post
    [text* your-email]

In mapping the CF7 Field to 3rd-Party Field, I have the following:

Is Value? CF7 Field       3rd-Party Field
True      123             oid
True      mySource        lead_source
False     your-name       first_name
False     your-phone      phone
False     your-email      email

As is, in SalesForce I will only receive the oid and lead_source but I will not receive the name/phone/email. If however, I set Is Value to True for your-name, in SalesForce I will receive "your-name" (without the quotes) as the first name.

This is the debug that I get when I only have is value set to true for oid and lead_source:

*** Post (to Service) ***
Array
(
    [oid] => 123
    [lead_source] => mySource
)

When I have is value set to true for oid, lead_source and first_name, this is the debug that I get:

*** Post (to Service) ***
Array
(
    [oid] => 123
    [lead_source] => mySource
    [first_name] => your-name
)

Any ideas as to what I am doing wrong please?