user rename and uidvalidity value

[Hamada, Ondrej]

Hi,
Can you please explain to me, why is a new value of uidvalidity generated when a user is renamed in cyrus_imapd?

Rename:
A001 rename user/a at bbb.c<mailto:user/a at bbb.c>om user/x at bbb.com

Before rename:
A001 select inbox
* OK [CLOSED] Ok
* 3 EXISTS
* 0 RECENT
* FLAGS (\Answered \Flagged \Draft \Deleted \Seen)
* OK [PERMANENTFLAGS (\Answered \Flagged \Draft \Deleted \Seen \*)] Ok
* OK [UNSEEN 2] Ok
* OK [UIDVALIDITY 1415092196] Ok
* OK [UIDNEXT 4] Ok
* OK [HIGHESTMODSEQ 5] Ok
* OK [URLMECH INTERNAL] Ok
A001 OK [READ-WRITE] Completed

After rename:
A001 select inbox
* 3 EXISTS
* 0 RECENT
* FLAGS (\Answered \Flagged \Draft \Deleted \Seen)
* OK [PERMANENTFLAGS (\Answered \Flagged \Draft \Deleted \Seen \*)] Ok
* OK [UNSEEN 2] Ok
* OK [UIDVALIDITY 1415093437] Ok
* OK [UIDNEXT 4] Ok
* OK [HIGHESTMODSEQ 7] Ok
* OK [URLMECH INTERNAL] Ok
A001 OK [READ-WRITE] Completed

Thank you in advance,

Ondra

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