I tried to manually update the AMCV cookie and fire a hit, it seems to work! Thanks for you help, it seems i was making this hard for no reason  

I have some cross-domain issues..We have website A and website B.We tried the "Visitor.appendVisitorIDsTo" to give the informations to website B but it's not working. Website B create is own MCID even if the adobe_mc param is in the url. So now we're trying to force MCID from website A into VID of w...

I have the same issue, I hope it's a bug. It is so usefull for testing.