Trouble setting up with existing MailDir

[Dolan M. <dmu...@gm...>]

Hi. I'm trying to move over from offlineimap and I am having a bit of trouble
syncing my mail. Here is my .mbsyncrc:

MaildirStore localSchool
Path ~/Mail/school
Inbox ~/Mail/school/INBOX

IMAPAccount accountSchool
Host imap.myuniversity.edu
User dpmurvihill
PassCmd "pwsafe-client -p myuni"
RequireSSL yes

IMAPStore remoteSchool
Account accountSchool

Channel school
Expunge Both
CopyArrivalDate yes
Master :remoteSchool:
Slave :localSchool:



~/Mail/school/ already has quite a bit of mail in it from my offlineimap
syncing. With the command "mbsync school" I get the following error:

Maildir error: UID 16162 is beyond highest assigned UID 0

I am sure this is a basic mistake, but I did not see an obvious fix when I
Googled it. Anyone experience this before?

Thanks for your time.

-Dolan