If MU is built to encompass 100's of independent sites and the buddypress is made to create a social site for those 100's of sites to participate ---- please help me to understand how the bp registration works with the sites, and how domain mapping syncronizes --
when someone clicks registered on a site -- it takes them to the bp registration page --- but there is no way back --
I was hoping that the source domain would be in the user or user_meta DB -- but all that is recorded in the source domain field is the main site - so I am not sure what that table field is for.
I would think BP would record who owns the original registration for user DB segmentation and credit ---- but it doesn't seem to --
I just have a hard time believing that BP has not provided a method to return to the original site of registration -- we have tried passing the source domain in a cookie -- but the sub-domain is not the same domain as the main site -- and so the cookie can't be read --
so we are now trying to pass the domain as a variable in the calling url structure -- to bp and store it in a global variable --
but I am wondering if anyone understands how bp - the site and domain mapping coordination works, and what Global array structure it uses to accomplish this ---