Trouble upgrading to 3.4.8

Hi all,

I’m having some trouble upgrading an very old server running cyrus-imapd 2.3.7 to 3.4.8 (the default package on Almalinux 9).

I’ve made a copy of the storage to test the migration and everything seems to go very well (using the steps from https://www.cyrusimap.org/3.4/imap/download/upgrade.html) and all works afterwards, but for some reason when using cyradm to check, I get \NonExistent \HasChildren on my own mailbox:

localhost> lm user.sander
user.sander (\NonExistent \HasChildren)   

Is this something I should worry about? And if so can somebody point me to either a solution or give tips on how to investigate this further?

Thanks,

Sander
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