PC change question

[Believe1970]

When a PC is approved does it count as a new opened account or do you keep the date of the original card?

[Anonymous]

I believe it to be different for each PC depending on the CC company and the nature of the PC.  From what I've read, it depends on whether the network changes (i.e. VISA to MC), and whether or not they have to change the acct number (like from regular MC to World MC).