Bug: The mechanism which synchronises CPID is not active here.
Basic info: https://boinc.berkeley.edu/wiki/Cross-project_identification

I created an account here via web interface, then added hosts.
boinc.tbrada.eu gave me new internal and external CPIDs, which differ from the CPIDs which I have at other projects.
All of my hosts keep sending my older CPID whenever they send a scheduler request:

$ grep cross_project_id /var/lib/boinc/sched_request_boinc.tbrada.eu.xml 
<cross_project_id>882000********************6b9e96</cross_project_id>

Yet the tbdrada server has never updated its database during the entire time since I created my account:

$ grep cross_project_id /var/lib/boinc/sched_reply_boinc.tbrada.eu.xml
<cross_project_id>90c63a********************d75f2f</cross_project_id>

I saw at stats.free-dc.org that at least one of my team mates has got a different CPID here than on his other projects, possibly (but not necessarily) for the same reason.

BTW, yesterday I created an account at QuChemPedIA@home. Accounts can only be created there via the web server, not through a boinc client. Hence I got a new CPID there too. But as soon as I added the first of hosts, my older CPID was pulled in by the QuChemPedIA server right away. That is, the synchronization mechanism works for me fine elsewhere.

I do not know what is up, but I can manually sync your CPIDs if you tell me (here or via DM), what your internal and external cpid is and a link to your account on any other project.