XF 1.5 Question about the proxy image function

[Stuart Wright]

We have a huge proportion of Google Analytics reporting 'not set' as the resource being accessed on AVForums (on Xenforo 1).
An SEO team have asked how Google Analytics is used with the proxy image function.
Can the team shed any light on how GA is implemented with regard to serving images via proxy.php ?

 

[Stuart Wright]

@Mike would appreciate an answer to this one, please, because the SEO team are pushing for a resolution.
Thanks