Tempting as it seems to just Crossgrade, it looks as if you lose your original status. I am a Logos 5 Platinum user but to retain the Platinum collection I need to spend several hundred dollars (and obtain several more resources that I don't really want). I recall a similar marketing ploy when the updating options from L4 to L5 were sold, and the outcry when that poor customer service was realized. But, fo course, I may be wrong about this and Logos sales representatives may answer this thread to say that I have misunderstood their marketing. Their clarification would be welcome.