I had to change my email address for all projects last Wednesday. BAM! handled it flawlessly. With the emal change, BOINC has changed the CPID listed for my accounts and they all seem to have settled on one, however, BonicSTATS / BAM! still has the old one. I can search for me by name and see all the projects reporting together but not from the "My detailed stats" selection of My BAM menu. Yesterday I tried to "renew" my cpid from the Main account page, but nothing seems to have changed.

How long until the change in cpid is reflected in my BAM! account?

year! i have the same problem .. please help! ...

Wait and see. It tekes obviously some more time here, but it will settle itself.
deprecated is linked with his stats again by now, you will be soon enough as well.

What is the status of this? Has the CPID synced up? If so, how long did it take.

I have seen a lot of issues dealing with the changing of personal data causing CPID issues, but haven't seen a time element of how long it takes to sync.

It depends on how often you contact the project scheduler. With a big cache of WUs that could last for a while if you just let it happen, for CPDN on my puter it will take at least a week for the next trickle, for Seti more then that, as I crunch it at only 2%, and a WU takes several hours.

You can decrease the lag by manually updating to the projects, though I don't know exactly if 1 or 2 contacts are necessary to keep everything in sync.

I just read on the WCG forums that they had issues regard CPID and caps in email address. I changed email address to all lower case. We'll see what happens in the days to come.

9 hours later, things seem to ok.

I just joined up amd my CPID is a blank – is that ok?

Yes this is perfectly ok. You'll get your CPID when the system matches it up with your email address I think.
In my case it took about a week, dunno about others...