When creating a button with a link in Marketing Cloud content builder there is the option to add a link URL, Title and Tracking Alias and a 'conversion tracking link' tick box. We have set up our buttons to contain all of these things inc. the conversion tracking box being ticked - however, when looking into the tracking of this email no conversion data is shown (despite the link in question being clicked).
I investigated further and when looking at the HTML of the button the conversion section says - 'conversion=false' - which I assume means it isn't being tracked. So I tried to manually change the HTML to 'conversion=true' - however, this change does not save.
My question is - How can we get conversions to be tracked on this button?