Migration with Backup/Restore is uncomplete

Dear zextras-team,

I did a migration to a new server and we followed your suggestions from ZxBackup: Incremental migration with ZeXtras Backup - ZeXtras Suite Wiki.

The procedure and the switching to new server went well. In at least one account I'm missing some mails (about 15 or 20). The old system ist still alive (but gets no new mails) so I can easy compare between old and new.

We have about 100 users and the size of the Zextras backup folder is about 500GB.

What I did after switching:

- another backup (smartscan) export from the old system (took about 8 hours)

ZeXtras Version: 1.10.2
ZeXtras commit: 5fa7c70acf715a78c825bdac8babbe223627b40b
ZAL Version: 1.5.2
ZAL commit: 5fa7c70acf715a78c825bdac8babbe223627b40b
Zimbra version: 8.0.8_GA_6184 20140925170008 20140925-1704 FOSS

- stats -
accounts: 116
skipped accounts(by COS): 0
metadata: 880693
files: 658836
checked items: 880693
backup path: /backup/zextras
skipped items: 0
I/O read exception: 0
num skipped files: 0
items/sec: 30

- imported the backup again for the specific user with GUI

ZeXtras Version: 1.10.2
ZeXtras commit: 5fa7c70acf715a78c825bdac8babbe223627b40b

- stats -
Restored Items: 15
Skipped Items: 22575
Unrestored Items: 0

Unfortunately the mails are still not complete.

Can You give me a hint? :confused:

Best regards,

Danny