Contact Form 7 – Post Fields compatibility

One of my fields in my contact form is using the Contact Form 7 – Post Fields helper plugin from contact forms. When I view the flamingo inbound message the field appears like this

post_image_select-939 [thumbnail-1043]
In the email message that contact forms sends the same field is shown as

label: [post_image_select-939] which turns out to be https://domain/venue/forecourt/

Is there any way to get flamingo to pass this value in and not the [thumbnail-1043] id?